## Found 2,717 Documents (Results 1–100)

100
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### A lower bound sequence for the minimum eigenvalue of Hadamard product of an $$M$$-matrix and its inverse. (English)Zbl 07584094

MSC:  15A18 15A42
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### Quasi-balanced weighing matrices, signed strongly regular graphs and association schemes. (English)Zbl 07576660

MSC:  05E30 05B20 05B30
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MSC:  05B20
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### Switching for 2-designs. (English)Zbl 07556023

MSC:  05B05 05B20
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### Enumerations of universal cycles for $$k$$-permutations. (English)Zbl 1491.05004

MSC:  05A05 05A15 05B20
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### Tensor polynomial identities. (English)Zbl 07534002

MSC:  15A69 15A24 05B20
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### Further numerical radius inequalities. (English)Zbl 07531416

MSC:  47A63 15A60
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### Constructions of 2-resilient rotation symmetric Boolean functions through symbol transformations of cyclic Hadamard matrix. (English)Zbl 07524442

MSC:  94D10 94A60 15B34
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### Values of the permanent function on multidimensional $$(0,1)$$-matrices. (English. Russian original)Zbl 07505241

Sib. Math. J. 63, No. 2, 262-276 (2022); translation from Sib. Mat. Zh. 63, No. 2, 316-333 (2022).
MSC:  15A15 15B34
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### Some integral inequalities for arithmetically and geometrically convex functions of two variables. (English)Zbl 07499216

MSC:  47A63 15A60
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### Construction of orthogonal arrays without interaction columns. (English)Zbl 07490425

MSC:  62K15 05B15
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### Cocyclic two-circulant core Hadamard matrices. (English)Zbl 1484.05031

MSC:  05B20 05B10 20J06
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### Quasi-orthogonal cocycles, optimal sequences and a conjecture of Littlewood. (English)Zbl 1484.05025

MSC:  05B10 05B20 94A55
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### Remarks on Hadamard matrices and a theorem of Macphail. (English)Zbl 1484.15037

MSC:  15B34 15A60 05B20
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### A geometric application for the $$\det^{S^2}$$ map. (English)Zbl 1489.15015

MSC:  15A15 13A50 05B20
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### Combinatorial properties of the enhanced principal rank characteristic sequence over finite fields. (English)Zbl 1483.05016

MSC:  05B20 05D10 15B33
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### Balanced weighing matrices. (English)Zbl 1479.05039

MSC:  05B20 05E30 05B30
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### Constants of the Kahane-Salem-Zygmund inequality asymptotically bounded by 1. (English)Zbl 07437673

MSC:  47A07 15A60 15A51
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### Existence results and Ulam-Hyers stability to impulsive coupled system fractional differential equations. (English)Zbl 07577634

MSC:  26A33 34B15
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### New estimates on numerical radius and operator norm of Hilbert space operators. (English)Zbl 07497791

MSC:  47A12 47A30 15A60
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### An Oppenheim type determinantal inequality for the Khatri-Rao product. (English)Zbl 1484.15020

MSC:  15A45 15A60 47B65
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### The varieties of minimal tomographically complete measurements. (English)Zbl 1486.81024

MSC:  81P18 81P15 15B34
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### Diagonal entries of the combined matrix of sign regular matrices of order three. (English)Zbl 1489.15029

MSC:  15A45 15A15 15B48
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### Combinatorial structure of a semigroup of bistochastic matrices. (English. Russian original)Zbl 1480.15038

Russ. Math. 65, No. 9, 69-72 (2021); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 2021, No. 9, 80-85 (2021).
MSC:  15B51 15A60 05B20
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### Equiangular lines in low dimensional Euclidean spaces. (English)Zbl 07452889

MSC:  05B40 05B20
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### A combinatorial algorithm for computing the degree of the determinant of a generic partitioned polynomial matrix with $$2\times 2$$ submatrices. (English)Zbl 1483.15003

Singh, Mohit (ed.) et al., Integer programming and combinatorial optimization. 22nd international conference, IPCO 2021, Atlanta, GA, USA, May 19–21, 2021. Proceedings. Cham: Springer. Lect. Notes Comput. Sci. 12707, 119-133 (2021).
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### Notes on Szasz’s inequality and Hadamard’s inequality of a positive definite matrix. (Chinese. English summary)Zbl 1488.15041

MSC:  15A45 15B48
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MSC:  15A15
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### Two-level parallel flats designs. (English)Zbl 1480.62160

MSC:  62K15 62K05
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### On a question of Bhatia, Friedland and Jain. (English)Zbl 1480.15006

MSC:  15A15 05E05 05B20
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### Real entries of complex Hadamard matrices and mutually unbiased bases in dimension six. (English)Zbl 1480.81020

MSC:  81P45 15B34 81P55
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### Optimal and efficient designs for comparing a set of test treatments with a set of controls in a heteroscedastic one-way layout with covariates. (English)Zbl 1473.62264

MSC:  62K05 05B15
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### Bordered complex Hadamard matrices and strongly regular graphs. (English)Zbl 1478.05015

MSC:  05B20 05E30
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### Circulant matrices with orthogonal rows and off-diagonal entries of absolute value 1. (English)Zbl 1478.15042

MSC:  15B05 15A18 15B34
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### Quantitative invertibility of random matrices: a combinatorial perspective. (English)Zbl 1476.15055

MSC:  15B52 15A09 05B20
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### Row Hadamard majorization on $$\mathbf{M}_{m,n}$$. (English)Zbl 07396194

MSC:  15A04 15A21
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### Interpretations of Kronecker product and ordinal product of poset matrices. (English)Zbl 07394965

MSC:  06A06 06A07 05B20
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### Riemann-Hadamard method for one system in three-dimensional space. (English. Russian original)Zbl 1472.35094

Differ. Equ. 57, No. 8, 1034-1041 (2021); translation from Differ. Uravn. 57, No. 8, 1063-1070 (2021).
MSC:  35F15 35A01 35A02
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### Balancedly splittable orthogonal designs and equiangular tight frames. (English)Zbl 1472.05028

MSC:  05B15 05B20 05B30
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### Zeon matrix inverses and the zeon combinatorial Laplacian. (English)Zbl 1471.15002

MSC:  15A09 05C50 05B20
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### Theory of homotopes with applications to mutually unbiased bases, harmonic analysis on graphs, and perverse sheaves. (English. Russian original)Zbl 1484.14033

Russ. Math. Surv. 76, No. 2, 195-259 (2021); translation from Usp. Mat. Nauk 76, No. 2, 3-70 (2021).
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### The construction of regular Hadamard matrices by cyclotomic classes. (English)Zbl 1466.05021

MSC:  05B20 05A18 05B10
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### Generalized alternating sign matrices and signed permutation matrices. (English)Zbl 1468.05022

MSC:  05B20 15B48
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### On the lower bounds for the minimum eigenvalue of the Hadamard product of an $$M$$-matrix and its inverse. (English)Zbl 1469.15013

MSC:  15A18 15A42
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### Some results on block Kronecker and block Hadamard product of matrices. (English)Zbl 1469.15026

MSC:  15A45 15B48 15B57
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### $$(t, \varepsilon)$$-disjunct matrices from two constant weight codes. (Chinese. English summary)Zbl 1474.05035

MSC:  05B20 94B25

### Error-detecting and error-correcting properties of binary superposition code $${M_q}(i: n, k, d)$$. (Chinese. English summary)Zbl 1474.94094

MSC:  94B25 94B60 05B20

### LCD codes from weighing matrices. (English)Zbl 1473.94152

MSC:  94B25 94B05
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### Semi-involutory matrices and signed self-inverse. (English)Zbl 1465.05022

MSC:  05B20 15B35
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### Convex $$(0, 1)$$-matrices and their epitopes. (English)Zbl 1464.05026

MSC:  05B20 05B50 15B36
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### Normalized Laplacian spectrum of some $$Q$$-coronas of two regular graphs. (English)Zbl 1460.05110

MSC:  05C50 47A75
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