# zbMATH — the first resource for mathematics

Compute Distance To:
 Documents Indexed: 136 Publications since 1975
all top 5

#### Co-Authors

 55 single-authored 9 Lin, Pi-Erh 8 Kayid, Mohamed 7 Mugdadi, Abdel-Razzaq 4 Alwasel, Ibrahim A. 3 Amezziane, Mohamed 3 Cerrito, Patricia B. 3 Li, Qi 2 Al-Nachawati, H. M. 2 Kochar, Subhash C. 2 Mostafa, Sayed A. 2 Ran, Iris S. 1 Ahmed, Abdusalam R. 1 Al-Nahawati, H. 1 Basu, Amiya K. 1 Dorea, Chang Chung Yu 1 El-Bassiouny, Ahmed H. 1 Elbatal, Ibrahim 1 Fan, Yanqin 1 Gupta, Sudhir C. 1 Gupta, Suresh C. 1 Hendi, M. I. 1 King, M. I. Hendi 1 Leelahanon, Sittisak 1 Liang, Ye 1 Liu, Wei 1 Pellerey, Franco 1 Sepehrifar, Mohammad B. 1 Wang, Ningning 1 Wu, Ke-Tsai 1 Ye, Shangyuan 1 Zhang, Ying
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#### Serials

 15 Journal of Nonparametric Statistics 11 Annals of the Institute of Statistical Mathematics 11 Journal of Statistical Planning and Inference 10 Statistics & Probability Letters 4 Metrika 3 The Annals of Statistics 3 Biometrika 3 Sankhyā. Series A. Methods and Techniques 3 Communications in Statistics. Theory and Methods 3 Probability in the Engineering and Informational Sciences 2 Bulletin of Mathematical Statistics 2 Journal of the London Mathematical Society. Second Series 2 Journal of Multivariate Analysis 2 Metron 2 Scandinavian Actuarial Journal 2 Journal of Statistical Computation and Simulation 2 Computational Statistics and Data Analysis 2 Statistical Papers 2 Communications in Statistics 1 Acta Mathematica Academiae Scientiarum Hungaricae 1 Advances in Applied Probability 1 IEEE Transactions on Information Theory 1 Scandinavian Journal of Statistics 1 Arkiv för Matematik 1 Applied Mathematics and Computation 1 Biometrical Journal 1 Utilitas Mathematica 1 Zeitschrift für Wahrscheinlichkeitstheorie und Verwandte Gebiete 1 Journal of Theoretical Probability 1 Applied Mathematical Modelling 1 SIAM Journal on Applied Mathematics 1 Stochastic Processes and their Applications 1 Arab Journal of Mathematical Sciences 1 Australian & New Zealand Journal of Statistics 1 Journal of the Royal Statistical Society. Series B. Statistical Methodology 1 Calcutta Statistical Association Bulletin 1 Journal of Applied Probability and Statistics 1 Journal of Statistical Theory and Practice 1 Sankhyā 1 Sankhyā. Series A
all top 5

#### Fields

 87 Statistics (62-XX) 43 Probability theory and stochastic processes (60-XX) 6 Numerical analysis (65-XX) 3 Operations research, mathematical programming (90-XX) 2 General and overarching topics; collections (00-XX) 1 Game theory, economics, finance, and other social and behavioral sciences (91-XX) 1 Information and communication theory, circuits (94-XX)

#### Citations contained in zbMATH Open

94 Publications have been cited 741 times in 588 Documents Cited by Year
Efficient estimation of a semiparametric partially linear varying coefficient model. Zbl 1064.62043
Ahmad, Ibrahim; Leelahanon, Sittisak; Li, Qi
2005
Testing symmetry of an unknown density function by kernel method. Zbl 0926.62032
1996
A nonparametric estimation of the entropy for absolutely continuous distributions. Zbl 0336.62001
1976
On the mean inactivity time ordering with reliability applications. Zbl 1059.62105
2004
Moments inequalities of aging families of distributions with hypotheses testing applications. Zbl 0971.60014
2001
On multivariate kernel estimation for samples from weighted distributions. Zbl 0810.62050
1995
A nonparametric test for the monotonicity of a failure rate function. Zbl 0349.62065
1975
Ahmad, I.; Sajid, M.; Hayat, T.; Ayub, M.
2008
A class of statistics useful in testing increasing failure rate average and new better than used life distributions. Zbl 0804.62086
1994
Unsteady flow and heat transfer of a second grade fluid over a stretching sheet. Zbl 1221.76022
Sajid, M.; Ahmad, I.; Hayat, T.; Ayub, M.
2009
Further results involving the MIT order and the IMIT class. Zbl 1075.60010
Ahmad, I. A.; Kayid, M.; Pellerey, F.
2005
Characterizations of the RHR and MIT orderings and the DRHR and IMIT classes of life distributions. Zbl 1336.60027
2005
A goodness-of-fit test for exponentiality based on the memoryless property. Zbl 0924.62039
Ahmad, Ibrahim A.; Alwasel, Ibrahim A.
1999
Multiobjective mixed symmetric duality involving cones. Zbl 1189.90135
2010
Nonparametric sequential estimation of a multiple regression function. Zbl 0372.62026
1976
Further moments inequalities of life distributions with hypothesis testing applications: The IFRA, NBUC and DMRL classes. Zbl 1034.60014
2004
Testing for dispersive ordering. Zbl 0662.62044
Ahmad, Ibrahim A.; Kochar, Subhash C.
1988
Uniform strong convergence of a generalized failure rate estimate. Zbl 0367.62045
1976
On asymptotic properties of an estimate of a functional of a probability density. Zbl 0354.62036
1976
Nondifferentiable second order symmetric duality in multiobjective programming. Zbl 1075.90067
2005
Nonparametric estimation of joint discrete-continuous probability densities with applications. Zbl 0803.62033
Ahmad, Ibrahim A.; Cerrito, Patricia B.
1994
Fitting a multiple regression function. Zbl 0537.62046
1984
Moment inequalities derived from comparing life with its equilibrium form. Zbl 1071.62093
2005
A new test for mean residual life times. Zbl 0751.62045
1992
On nondifferentiable second order symmetric duality in mathematical programming. Zbl 1070.90105
2004
Testing independence by nonparametric kernel method. Zbl 0899.62049
1997
Residuals density estimation in nonparametric regression. Zbl 0785.62035
1992
Jackknife estimation for a family of life distributions. Zbl 0731.62149
1988
Second order nondifferentiable minimax fractional programming with square root terms. Zbl 1324.26013
2013
Testing new better than used classes of life distributions derived from a convex ordering using kernel methods. Zbl 0955.62099
Ahmad, I. A.; Hendi, M. I.; Al-Nachawati, H.
1999
Modification of some goodness-of-fit statistics to yield asymptotically normal null distributions. Zbl 0817.62033
1993
On the Berry-Esseen theorem for random U-statistics. Zbl 0463.60028
1980
Nonparametric estimation of an affinity measure between two absolutely continuous distributions with hypotheses testing applications. Zbl 0453.62033
1980
Strong consistency of density estimation by orthogonal series methods for dependent variables with applications. Zbl 0445.62053
1979
A bandwidth selection for kernel density estimation of functions of random variables. Zbl 1429.62132
2004
MOL solvers for hyperbolic PDEs with source terms. Zbl 0986.65084
2001
Optimal bandwidths for kernel density estimators of functions of observations. Zbl 0965.62030
2001
Testing whether a survival distribution is new better than used of an unknown specified age. Zbl 0938.62111
1998
Goodness of fit tests based on the $$L_2$$-norm of multivariate probability density functions. Zbl 1360.62206
Ahmad, Ibrahim A.; Cerrito, Patricia B.
1993
Nonparametric estimation of a vector-valued bivariate failure rate. Zbl 0369.62041
1977
Second-order duality in nondifferentiable fractional programming. Zbl 1231.90355
Ahmad, I.; Husain, Z.; Al-Homidan, S.
2011
Minimax mixed integer symmetric duality for multiobjective variational problems. Zbl 1111.90050
2007
An aging notion derived from the increasing convex ordering: the NBUCA class. Zbl 1077.62004
Ahmad, I. A.; Ahmed, A.; Elbatal, I.; Kayid, M.
2006
Nondifferentiable second-order symmetric duality. Zbl 1141.90571
2005
A note on goodness-of-fit statistics with asymptotically normal distributions. Zbl 0982.62041
Ahmad, Ibrahim A.; Dorea, Chang C. Y.
2001
A note on nonparametric density estimation for dependent variables using a delta sequence. Zbl 0477.62022
1981
On the Chernoff-Savage theorem for dependent sequences. Zbl 0457.62021
1980
Higher-order duality in nondifferentiable minimax fractional programming involving generalized convexity. Zbl 1279.26025
2012
Ahmad, I.; Sajid, M.; Hayat, T.
2009
Testing normality using kernel methods. Zbl 1024.62018
2003
An algorithm for ODEs from atmospheric dispersion problems. Zbl 0889.65085
1997
Nonparametric estimation of the location and scale parameters based on density estimation. Zbl 0486.62038
1982
Weighted Hellinger distance as an error criterion for bandwidth selection in kernel estimation. Zbl 1099.62034
2006
Data based bandwidth selection in kernel density estimation with parametric start via kernel contrasts. Zbl 1062.62056
Ahmad, Ibrahim A.; Ran, Iris S.
2004
Analysis of kernel density estimation of functions of random variables. Zbl 1054.62030
2003
Bivariate symmetry: definitions and basic properties. Zbl 1263.62013
Ahmad, Ibrahim A.; Cerrito, Patricia B.
1991
Testing whether F is more IFR than G. Zbl 0691.62046
Ahmad, I. A.; Kochar, S. C.
1990
Integrated mean square properties of density estimation by orthogonal series methods for dependent variables. Zbl 0493.62039
1982
On some asymptotic properties of U-statistics. Zbl 0468.62017
1981
A class of asymptotically distribution-free statistics similar to Student’s t. Zbl 0319.62032
1975
A Berry-Esséen inequality without higher order moments. Zbl 1356.60040
2016
Probability inequalities for bounded random vectors. Zbl 1266.60027
2013
On testing alternative classes of life distribution with guaranteed survival times. Zbl 1452.62720
2009
On comparison of the solutions for an axisymmetric flow. Zbl 1173.76039
Hayat, T.; Ahmad, I.; Javed, T.
2009
A general and fast convergent bandwidth selection method of kernel estimator. Zbl 1146.62025
2007
Reversed preservation of stochastic orders for random minima and maxima with applications. Zbl 1114.60017
2007
Bounds of moment generating functions of some life distributions. Zbl 1107.62013
2005
A simple and more efficient new approach to life testing. Zbl 1215.62105
2004
Kernel contrasts: A data-based method of choosing smoothing parameters in nonparametric density estimation. Zbl 1049.62033
Ahmad, Ibrahim A.; Ran, Iris S.
2004
On moment inequalities of the supremum of empirical processes with applications to kernel estimation. Zbl 0996.62028
2002
Goodness-of-fit statistics based on weighted $$L_ p$$-functionals. Zbl 0889.62036
1997
Modification of some goodness of fit statistics. II: Two-sample and symmetry testing. Zbl 0893.62033
1996
$$L_p$$-consistency of multivariate density estimates. Zbl 0514.62061
1982
The exact order of normal approximation in bivariate renewal theory. Zbl 0463.60030
1981
Nonparametric estimation of Matusita’s measure of affinity between absolutely continuous distributions. Zbl 0458.62033
1980
Asymptotic joint distribution of sample quantiles and sample mean with applications. Zbl 0432.62012
Lin, Pi-Erh; Wu, Ke-Tsai; Ahmad, Ibrahim A.
1980
A note on rates of convergence in the multidimensional CLT for maximum partial sums. Zbl 0406.60021
1979
A Berry-Esseen type theorem. Zbl 0355.60025
1977
Second order fractional symmetric duality. Zbl 1313.90244
2014
Mixed type symmetric duality for multiobjective variational problems with cone constraints. Zbl 1287.49036
Ahmad, I.; Husain, Z.; Al-Homidan, S.
2014
On quasi-cancellativity of AG-groupoids. Zbl 1256.20061
Shah, M.; Ahmad, I.; Ali, A.
2012
Estimation of location and scale parameters based on kernel functional estimators. Zbl 1414.62067
2011
Testing behavior of the reversed hazard rate. Zbl 1217.62148
Kayid, M.; Al-Nahawati, H.; Ahmad, I. A.
2011
Some properties of classes of life distributions with unknown age. Zbl 1062.62020
2004
Testing exponentiality against positive ageing using kernel methods. Zbl 0972.62095
2000
Nonparametric estimation of the expected duration of old age. Zbl 0939.62028
1999
On the Poisson approximation of multinomial probabilities. Zbl 0562.62013
1985
On $$L_ p$$-convergence rates for statistical functions with application to L-estimates. Zbl 0563.62013
1983
Consistency of a nonparametric estimation of a density functional. Zbl 0517.62043
1983
On the normal approximation of an estimate of the mean residual life of a multicomponent system. Zbl 0509.62090
1983
A note on weak convergence of mean residual life of stationary mixing random variables. Zbl 0495.62045
1983
Conditioned rates of convergence in the CLT for sums and maximum sums. Zbl 0449.60017
1981
On concentration functions of random sums of independent random variables. Zbl 0428.60063
1980
A remark on the SLLN for random partial sums. Zbl 0424.60031
1980
A Berry-Esséen inequality without higher order moments. Zbl 1356.60040
2016
Second order fractional symmetric duality. Zbl 1313.90244
2014
Mixed type symmetric duality for multiobjective variational problems with cone constraints. Zbl 1287.49036
Ahmad, I.; Husain, Z.; Al-Homidan, S.
2014
Second order nondifferentiable minimax fractional programming with square root terms. Zbl 1324.26013
2013
Probability inequalities for bounded random vectors. Zbl 1266.60027
2013
Higher-order duality in nondifferentiable minimax fractional programming involving generalized convexity. Zbl 1279.26025
2012
On quasi-cancellativity of AG-groupoids. Zbl 1256.20061
Shah, M.; Ahmad, I.; Ali, A.
2012
Second-order duality in nondifferentiable fractional programming. Zbl 1231.90355
Ahmad, I.; Husain, Z.; Al-Homidan, S.
2011
Estimation of location and scale parameters based on kernel functional estimators. Zbl 1414.62067
2011
Testing behavior of the reversed hazard rate. Zbl 1217.62148
Kayid, M.; Al-Nahawati, H.; Ahmad, I. A.
2011
Multiobjective mixed symmetric duality involving cones. Zbl 1189.90135
2010
Unsteady flow and heat transfer of a second grade fluid over a stretching sheet. Zbl 1221.76022
Sajid, M.; Ahmad, I.; Hayat, T.; Ayub, M.
2009
Ahmad, I.; Sajid, M.; Hayat, T.
2009
On testing alternative classes of life distribution with guaranteed survival times. Zbl 1452.62720
2009
On comparison of the solutions for an axisymmetric flow. Zbl 1173.76039
Hayat, T.; Ahmad, I.; Javed, T.
2009
Ahmad, I.; Sajid, M.; Hayat, T.; Ayub, M.
2008
Minimax mixed integer symmetric duality for multiobjective variational problems. Zbl 1111.90050
2007
A general and fast convergent bandwidth selection method of kernel estimator. Zbl 1146.62025
2007
Reversed preservation of stochastic orders for random minima and maxima with applications. Zbl 1114.60017
2007
An aging notion derived from the increasing convex ordering: the NBUCA class. Zbl 1077.62004
Ahmad, I. A.; Ahmed, A.; Elbatal, I.; Kayid, M.
2006
Weighted Hellinger distance as an error criterion for bandwidth selection in kernel estimation. Zbl 1099.62034
2006
Efficient estimation of a semiparametric partially linear varying coefficient model. Zbl 1064.62043
Ahmad, Ibrahim; Leelahanon, Sittisak; Li, Qi
2005
Further results involving the MIT order and the IMIT class. Zbl 1075.60010
Ahmad, I. A.; Kayid, M.; Pellerey, F.
2005
Characterizations of the RHR and MIT orderings and the DRHR and IMIT classes of life distributions. Zbl 1336.60027
2005
Nondifferentiable second order symmetric duality in multiobjective programming. Zbl 1075.90067
2005
Moment inequalities derived from comparing life with its equilibrium form. Zbl 1071.62093
2005
Nondifferentiable second-order symmetric duality. Zbl 1141.90571
2005
Bounds of moment generating functions of some life distributions. Zbl 1107.62013
2005
On the mean inactivity time ordering with reliability applications. Zbl 1059.62105
2004
Further moments inequalities of life distributions with hypothesis testing applications: The IFRA, NBUC and DMRL classes. Zbl 1034.60014
2004
On nondifferentiable second order symmetric duality in mathematical programming. Zbl 1070.90105
2004
A bandwidth selection for kernel density estimation of functions of random variables. Zbl 1429.62132
2004
Data based bandwidth selection in kernel density estimation with parametric start via kernel contrasts. Zbl 1062.62056
Ahmad, Ibrahim A.; Ran, Iris S.
2004
A simple and more efficient new approach to life testing. Zbl 1215.62105
2004
Kernel contrasts: A data-based method of choosing smoothing parameters in nonparametric density estimation. Zbl 1049.62033
Ahmad, Ibrahim A.; Ran, Iris S.
2004
Some properties of classes of life distributions with unknown age. Zbl 1062.62020
2004
Testing normality using kernel methods. Zbl 1024.62018
2003
Analysis of kernel density estimation of functions of random variables. Zbl 1054.62030
2003
On moment inequalities of the supremum of empirical processes with applications to kernel estimation. Zbl 0996.62028
2002
Moments inequalities of aging families of distributions with hypotheses testing applications. Zbl 0971.60014
2001
MOL solvers for hyperbolic PDEs with source terms. Zbl 0986.65084
2001
Optimal bandwidths for kernel density estimators of functions of observations. Zbl 0965.62030
2001
A note on goodness-of-fit statistics with asymptotically normal distributions. Zbl 0982.62041
Ahmad, Ibrahim A.; Dorea, Chang C. Y.
2001
Testing exponentiality against positive ageing using kernel methods. Zbl 0972.62095
2000
A goodness-of-fit test for exponentiality based on the memoryless property. Zbl 0924.62039
Ahmad, Ibrahim A.; Alwasel, Ibrahim A.
1999
Testing new better than used classes of life distributions derived from a convex ordering using kernel methods. Zbl 0955.62099
Ahmad, I. A.; Hendi, M. I.; Al-Nachawati, H.
1999
Nonparametric estimation of the expected duration of old age. Zbl 0939.62028
1999
Testing whether a survival distribution is new better than used of an unknown specified age. Zbl 0938.62111
1998
Testing independence by nonparametric kernel method. Zbl 0899.62049
1997
An algorithm for ODEs from atmospheric dispersion problems. Zbl 0889.65085
1997
Goodness-of-fit statistics based on weighted $$L_ p$$-functionals. Zbl 0889.62036
1997
Testing symmetry of an unknown density function by kernel method. Zbl 0926.62032
1996
Modification of some goodness of fit statistics. II: Two-sample and symmetry testing. Zbl 0893.62033
1996
On multivariate kernel estimation for samples from weighted distributions. Zbl 0810.62050
1995
A class of statistics useful in testing increasing failure rate average and new better than used life distributions. Zbl 0804.62086
1994
Nonparametric estimation of joint discrete-continuous probability densities with applications. Zbl 0803.62033
Ahmad, Ibrahim A.; Cerrito, Patricia B.
1994
Modification of some goodness-of-fit statistics to yield asymptotically normal null distributions. Zbl 0817.62033
1993
Goodness of fit tests based on the $$L_2$$-norm of multivariate probability density functions. Zbl 1360.62206
Ahmad, Ibrahim A.; Cerrito, Patricia B.
1993
A new test for mean residual life times. Zbl 0751.62045
1992
Residuals density estimation in nonparametric regression. Zbl 0785.62035
1992
Bivariate symmetry: definitions and basic properties. Zbl 1263.62013
Ahmad, Ibrahim A.; Cerrito, Patricia B.
1991
Testing whether F is more IFR than G. Zbl 0691.62046
Ahmad, I. A.; Kochar, S. C.
1990
Testing for dispersive ordering. Zbl 0662.62044
Ahmad, Ibrahim A.; Kochar, Subhash C.
1988
Jackknife estimation for a family of life distributions. Zbl 0731.62149
1988
On the Poisson approximation of multinomial probabilities. Zbl 0562.62013
1985
Fitting a multiple regression function. Zbl 0537.62046
1984
On $$L_ p$$-convergence rates for statistical functions with application to L-estimates. Zbl 0563.62013
1983
Consistency of a nonparametric estimation of a density functional. Zbl 0517.62043
1983
On the normal approximation of an estimate of the mean residual life of a multicomponent system. Zbl 0509.62090
1983
A note on weak convergence of mean residual life of stationary mixing random variables. Zbl 0495.62045
1983
Nonparametric estimation of the location and scale parameters based on density estimation. Zbl 0486.62038
1982
Integrated mean square properties of density estimation by orthogonal series methods for dependent variables. Zbl 0493.62039
1982
$$L_p$$-consistency of multivariate density estimates. Zbl 0514.62061
1982
A note on nonparametric density estimation for dependent variables using a delta sequence. Zbl 0477.62022
1981
On some asymptotic properties of U-statistics. Zbl 0468.62017
1981
The exact order of normal approximation in bivariate renewal theory. Zbl 0463.60030
1981
Conditioned rates of convergence in the CLT for sums and maximum sums. Zbl 0449.60017
1981
On the Berry-Esseen theorem for random U-statistics. Zbl 0463.60028
1980
Nonparametric estimation of an affinity measure between two absolutely continuous distributions with hypotheses testing applications. Zbl 0453.62033
1980
On the Chernoff-Savage theorem for dependent sequences. Zbl 0457.62021
1980
Nonparametric estimation of Matusita’s measure of affinity between absolutely continuous distributions. Zbl 0458.62033
1980
Asymptotic joint distribution of sample quantiles and sample mean with applications. Zbl 0432.62012
Lin, Pi-Erh; Wu, Ke-Tsai; Ahmad, Ibrahim A.
1980
On concentration functions of random sums of independent random variables. Zbl 0428.60063
1980
A remark on the SLLN for random partial sums. Zbl 0424.60031
1980
Strong consistency of density estimation by orthogonal series methods for dependent variables with applications. Zbl 0445.62053
1979
A note on rates of convergence in the multidimensional CLT for maximum partial sums. Zbl 0406.60021
1979
Nonparametric estimation of a vector-valued bivariate failure rate. Zbl 0369.62041
1977
A Berry-Esseen type theorem. Zbl 0355.60025
1977
A nonparametric estimation of the entropy for absolutely continuous distributions. Zbl 0336.62001
1976
Nonparametric sequential estimation of a multiple regression function. Zbl 0372.62026
1976
Uniform strong convergence of a generalized failure rate estimate. Zbl 0367.62045
1976
On asymptotic properties of an estimate of a functional of a probability density. Zbl 0354.62036
1976
A nonparametric test for the monotonicity of a failure rate function. Zbl 0349.62065
1975
A class of asymptotically distribution-free statistics similar to Student’s t. Zbl 0319.62032
1975
all top 5