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Author ID: ojanguren.manuel Recent zbMATH articles by "Ojanguren, Manuel"
Published as: Ojanguren, M.; Ojanguren, Manuel
Documents Indexed: 57 Publications since 1966, including 1 Book
1 Contribution as Editor
Reviewing Activity: 5 Reviews
Co-Authors: 17 Co-Authors with 42 Joint Publications
348 Co-Co-Authors

Publications by Year

Citations contained in zbMATH Open

43 Publications have been cited 620 times in 493 Documents Cited by Year
Théorie de la descente et algèbres d’Azumaya. Zbl 0284.13002
Knus, Max-Albert; Ojanguren, Manuel
169
1974
Variétés unirationelles non rationelles: Au-delà de l’exemple d’Artin et Mumford. (Non rational unirational varieties: Beyond the Artin-Mumford example). Zbl 0686.14050
Colliot-Thélène, Jean-Louis; Ojanguren, Manuel
67
1989
Locally trivial principal homogeneous spaces. (Espaces principaux homogènes localement triviaux.) Zbl 0795.14029
Colliot-Thélène, Jean-Louis; Ojanguren, Manuel
44
1992
Cancellation of Azumaya algebras. Zbl 0223.16006
Ojanguren, M.; Sridharan, R.
35
1971
A purity theorem for the Witt group. Zbl 0980.11025
Ojanguren, Manuel; Panin, Ivan
30
1999
Quadratic forms and Azumaya algebras. Zbl 0385.16001
Knus, M. A.; Ojanguren, M.; Sridharan, R.
26
1978
Quadratic forms over fraction fields of two-dimensional Henselian rings and Brauer groups of related schemes. Zbl 1055.14019
Colliot-Thélène, J.-L.; Ojanguren, M.; Parimala, R.
22
2002
Quadratic forms over regular rings. Zbl 0621.10017
Ojanguren, Manuel
20
1980
Rationally trivial Hermitian spaces are locally trivial. Zbl 1042.11024
Ojanguren, Manuel; Panin, Ivan
19
2001
A note on the fundamental theorem of projective geometry. Zbl 0176.17502
Ojanguren, M.; Sridharan, R.
19
1969
Formes quadratiques sur les algèbres de polynômes. Zbl 0396.13021
Ojanguren, Manuel
16
1978
A Mayer-Vietoris sequence for the Brauer group. Zbl 0295.13002
Knus, M.-A.; Ojanguren, M.
16
1974
A splitting theorem for quadratic forms. Zbl 0487.13005
Ojanguren, Manuel
15
1982
On Brauer groups in characteristic p. Zbl 0338.13005
Knus, M. A.; Ojanguren, M.; Saltman, D. J.
11
1976
A norm for modules and algebras. Zbl 0297.13009
Knus, Max-Albert; Ojanguren, Manuel
9
1975
Modules and quadratic forms over polynomial algebras. Zbl 0374.16011
Knus, M.-A.; Ojanguren, M.
8
1977
Unités représentées par des formes quadratiques ou par des normes réduites. Zbl 0498.10015
Ojanguren, Manuel
7
1982
Fibrés algébriques sur une surface réelle. (Algebraic fibers on a real surface). Zbl 0647.14011
Barge, Jean; Ojanguren, Manuel
7
1987
Sur le polynôme caractéristique et les automorphismes des algébres d’Azumaya. (On the characteristic polynomial and the automorphisms of Azumaya algebras). Zbl 0235.16005
Knus, M. A.; Ojanguren, M.
6
1972
Symplectic bundles over affine surfaces. Zbl 0598.14006
Ojanguren, M.; Parimala, R.; Sridharan, R.
5
1986
The Clifford algebra of a metabolic space. Zbl 0743.13002
Knus, Max-Albert; Ojanguren, Manuel
5
1991
Freie Präsentierungen endlicher Gruppen und zugehörige Darstellungen. Zbl 0159.30503
Ojanguren, M.
5
1968
Composition of quaternary quadratic forms. Zbl 0612.10015
Kneser, M.; Knus, M.-A.; Ojanguren, M.; Parimala, R.; Sridharan, R.
4
1986
Witt groups of the punctured spectrum of a 3-dimensional regular local ring and a purity theorem. Zbl 0930.19003
Ojanguren, M.; Parimala, R.; Sridharan, R.; Suresh, V.
4
1999
Positive-definite quadratic bundles over the plane. Zbl 0507.14010
Knus, M.-A.; Ojanguren, M.; Parimala, Raman
4
1982
Indecomposable quadratic bundles of rank 4n over the real affine plane. Zbl 0513.14006
Ojanguren, M.; Parimala, Raman; Sridharan, R.
4
1983
Ketu and the second invariant of a quadratic space. Zbl 0802.19004
Ojanguren, M.; Parimala, R.; Sridharan, R.
4
1993
A nontrivial locally trivial algebra. Zbl 0281.13001
Ojanguren, Manuel
4
1974
Sur quelques applications de la théorie de la descente à l’étude du groupe de Brauer. Zbl 0248.13002
Knus, M.-A.; Ojanguren, M.
4
1972
Projective modules over real affine algebras. Zbl 0696.13007
Ojanguren, M.; Parimala, R.
3
1990
Strongly algebraic vector bundles over \(\mathbb R^d\). Zbl 0696.13008
Bhatwadekar, S. M.; Ischebeck, Friedrich; Ojanguren, M.; Schabhüser, G.
3
1990
Cohomologie etale et groupe de Brauer. Zbl 0457.13003
Knus, M.-A.; Ojanguren, M.
3
1981
On the norm principle for quadratic forms. Zbl 1099.11019
Ojanguren, M.; Panin, I.; Zainoulline, K.
3
2004
A remark on generic splitting rings. Zbl 0328.16006
Ojanguren, Manuel
3
1976
A note on the automorphisms of maximal orders. Zbl 0238.16007
Knus, M.-A.; Ojanguren, M.
3
1972
A note on purely inseparable extension. Zbl 0203.34903
Ojanguren, M.; Sridharan, R.
3
1969
The Witt group of a real surface. Zbl 0687.14022
Ojanguren, M.; Ayoub, G.
2
1987
On Karoubi’s theorem: \(W(A) = W(A[t])\). Zbl 0552.18003
Ojanguren, Manuel
2
1984
Fibrati vettoriali sulle superfici cubiche. Zbl 0385.14003
Ojanguren, Manuel
2
1978
The Witt group of Laurent polynomials. Zbl 1012.19004
Ojanguren, Manuel; Panin, Ivan
1
2000
On the third invariant of a quadratic form. (Sur le troisième invariant d’un forme quadratique.) Zbl 0837.11022
Barge, J.; Ojanguren, M.
1
1995
From Wallis to Ramanujan, in the company of R. W. Gosper. (Da Wallis a Ramanujan, in compagnia di R. W. Gosper.) Zbl 1421.11108
Ojanguren, Manuel
1
2018
Sur les presentations libres des groupes finis. Zbl 0189.31902
Ojanguren, M.
1
1967
From Wallis to Ramanujan, in the company of R. W. Gosper. (Da Wallis a Ramanujan, in compagnia di R. W. Gosper.) Zbl 1421.11108
Ojanguren, Manuel
1
2018
On the norm principle for quadratic forms. Zbl 1099.11019
Ojanguren, M.; Panin, I.; Zainoulline, K.
3
2004
Quadratic forms over fraction fields of two-dimensional Henselian rings and Brauer groups of related schemes. Zbl 1055.14019
Colliot-Thélène, J.-L.; Ojanguren, M.; Parimala, R.
22
2002
Rationally trivial Hermitian spaces are locally trivial. Zbl 1042.11024
Ojanguren, Manuel; Panin, Ivan
19
2001
The Witt group of Laurent polynomials. Zbl 1012.19004
Ojanguren, Manuel; Panin, Ivan
1
2000
A purity theorem for the Witt group. Zbl 0980.11025
Ojanguren, Manuel; Panin, Ivan
30
1999
Witt groups of the punctured spectrum of a 3-dimensional regular local ring and a purity theorem. Zbl 0930.19003
Ojanguren, M.; Parimala, R.; Sridharan, R.; Suresh, V.
4
1999
On the third invariant of a quadratic form. (Sur le troisième invariant d’un forme quadratique.) Zbl 0837.11022
Barge, J.; Ojanguren, M.
1
1995
Ketu and the second invariant of a quadratic space. Zbl 0802.19004
Ojanguren, M.; Parimala, R.; Sridharan, R.
4
1993
Locally trivial principal homogeneous spaces. (Espaces principaux homogènes localement triviaux.) Zbl 0795.14029
Colliot-Thélène, Jean-Louis; Ojanguren, Manuel
44
1992
The Clifford algebra of a metabolic space. Zbl 0743.13002
Knus, Max-Albert; Ojanguren, Manuel
5
1991
Projective modules over real affine algebras. Zbl 0696.13007
Ojanguren, M.; Parimala, R.
3
1990
Strongly algebraic vector bundles over \(\mathbb R^d\). Zbl 0696.13008
Bhatwadekar, S. M.; Ischebeck, Friedrich; Ojanguren, M.; Schabhüser, G.
3
1990
Variétés unirationelles non rationelles: Au-delà de l’exemple d’Artin et Mumford. (Non rational unirational varieties: Beyond the Artin-Mumford example). Zbl 0686.14050
Colliot-Thélène, Jean-Louis; Ojanguren, Manuel
67
1989
Fibrés algébriques sur une surface réelle. (Algebraic fibers on a real surface). Zbl 0647.14011
Barge, Jean; Ojanguren, Manuel
7
1987
The Witt group of a real surface. Zbl 0687.14022
Ojanguren, M.; Ayoub, G.
2
1987
Symplectic bundles over affine surfaces. Zbl 0598.14006
Ojanguren, M.; Parimala, R.; Sridharan, R.
5
1986
Composition of quaternary quadratic forms. Zbl 0612.10015
Kneser, M.; Knus, M.-A.; Ojanguren, M.; Parimala, R.; Sridharan, R.
4
1986
On Karoubi’s theorem: \(W(A) = W(A[t])\). Zbl 0552.18003
Ojanguren, Manuel
2
1984
Indecomposable quadratic bundles of rank 4n over the real affine plane. Zbl 0513.14006
Ojanguren, M.; Parimala, Raman; Sridharan, R.
4
1983
A splitting theorem for quadratic forms. Zbl 0487.13005
Ojanguren, Manuel
15
1982
Unités représentées par des formes quadratiques ou par des normes réduites. Zbl 0498.10015
Ojanguren, Manuel
7
1982
Positive-definite quadratic bundles over the plane. Zbl 0507.14010
Knus, M.-A.; Ojanguren, M.; Parimala, Raman
4
1982
Cohomologie etale et groupe de Brauer. Zbl 0457.13003
Knus, M.-A.; Ojanguren, M.
3
1981
Quadratic forms over regular rings. Zbl 0621.10017
Ojanguren, Manuel
20
1980
Quadratic forms and Azumaya algebras. Zbl 0385.16001
Knus, M. A.; Ojanguren, M.; Sridharan, R.
26
1978
Formes quadratiques sur les algèbres de polynômes. Zbl 0396.13021
Ojanguren, Manuel
16
1978
Fibrati vettoriali sulle superfici cubiche. Zbl 0385.14003
Ojanguren, Manuel
2
1978
Modules and quadratic forms over polynomial algebras. Zbl 0374.16011
Knus, M.-A.; Ojanguren, M.
8
1977
On Brauer groups in characteristic p. Zbl 0338.13005
Knus, M. A.; Ojanguren, M.; Saltman, D. J.
11
1976
A remark on generic splitting rings. Zbl 0328.16006
Ojanguren, Manuel
3
1976
A norm for modules and algebras. Zbl 0297.13009
Knus, Max-Albert; Ojanguren, Manuel
9
1975
Théorie de la descente et algèbres d’Azumaya. Zbl 0284.13002
Knus, Max-Albert; Ojanguren, Manuel
169
1974
A Mayer-Vietoris sequence for the Brauer group. Zbl 0295.13002
Knus, M.-A.; Ojanguren, M.
16
1974
A nontrivial locally trivial algebra. Zbl 0281.13001
Ojanguren, Manuel
4
1974
Sur le polynôme caractéristique et les automorphismes des algébres d’Azumaya. (On the characteristic polynomial and the automorphisms of Azumaya algebras). Zbl 0235.16005
Knus, M. A.; Ojanguren, M.
6
1972
Sur quelques applications de la théorie de la descente à l’étude du groupe de Brauer. Zbl 0248.13002
Knus, M.-A.; Ojanguren, M.
4
1972
A note on the automorphisms of maximal orders. Zbl 0238.16007
Knus, M.-A.; Ojanguren, M.
3
1972
Cancellation of Azumaya algebras. Zbl 0223.16006
Ojanguren, M.; Sridharan, R.
35
1971
A note on the fundamental theorem of projective geometry. Zbl 0176.17502
Ojanguren, M.; Sridharan, R.
19
1969
A note on purely inseparable extension. Zbl 0203.34903
Ojanguren, M.; Sridharan, R.
3
1969
Freie Präsentierungen endlicher Gruppen und zugehörige Darstellungen. Zbl 0159.30503
Ojanguren, M.
5
1968
Sur les presentations libres des groupes finis. Zbl 0189.31902
Ojanguren, M.
1
1967
all top 5

Cited by 396 Authors

26 Parimala, Raman
19 Caenepeel, Stefaan
19 Panin, Ivan A.
14 Pianzola, Arturo
13 Colliot-Thélène, Jean-Louis
13 van Oystaeyen, Freddy
12 Saltman, David J.
11 Ojanguren, Manuel
10 Knus, Max-Albert
8 Gille, Philippe
8 Verschoren, Alain H. M. J.
7 First, Uriya A.
7 Guédénon, Thomas
7 Sridharan, Ramaiyengar
6 Braun, Amiram
6 Ford, Timothy J.
6 Kang, Ming-Chang
6 Tabuada, Gonçalo
6 Voisin, Claire
5 Auel, Asher Natan
5 Gille, Stefan G.
5 Harbater, David
5 Hoshi, Akinari
5 Paques, Antonio
5 Schreieder, Stefan
5 Srinivas, Vasudevan
5 Stavrova, Anastasia K.
5 Suresh, Venapally
4 Asok, Aravind
4 Böhning, Christian
4 Chernousov, Vladimir I.
4 Hartmann, Julia
4 Krashen, Daniel
4 Lashkhi, Alexander A.
4 Le Bruyn, Lieven
4 Militaru, Gigel
4 Pumplün, Susanne
4 Rao, Ravi A.
4 Tignol, Jean-Pierre
3 Agore, Ana-Loredana
3 Bachmann, Tom
3 Balmer, Paul
3 Bix, Robert
3 Cuadra, Juan
3 DeMeyer, Frank R.
3 Druzhinin, Andreĭ É.
3 Fasel, Jean
3 Haile, Darrell E.
3 Irving, Ronald S.
3 Ischebeck, Friedrich
3 Kahn, Bruno
3 Keshari, Manoj Kumar
3 Kopejko, V. I.
3 Mandal, Satya
3 Pirutka, Alena
3 Prélat, Daniel
3 Reichstein, Zinovy B.
3 Stafford, J. Toby
3 Starikova, Ol’ga Aleksandrovna
3 Swan, Richard Gordon
3 Tschinkel, Yuri
3 Van den Bergh, Michel
3 Wadsworth, Adrian R.
3 Wendt, Matthias
3 Yamasaki, Aiichi
3 Zainoulline, Kirill
2 Ambily, Ambattu Asokan
2 Bayer-Fluckiger, Eva
2 Beattie, Margaret
2 Bertuccioni, Inta
2 Bogomolov, Fedor Alekseivich
2 Borovoi, Mikhail V.
2 Brehm, Ulrich
2 Česnavičius, Kęstutis
2 Chakraborty, Kuntal
2 Childs, Lindsay N.
2 Chu, Huah
2 Diaz, Humberto A.
2 Dicks, Warren
2 Erez, Boas
2 Fedorov, Roman M.
2 Femić, Bojana
2 Fernández-Carmena, Fernando
2 García Rozas, Juan Ramon
2 Graf von Bothmer, Hans-Christian
2 Greither, Cornelius
2 Griffith, Phillip A.
2 Gupta, Narain Datt
2 Haggenmüller, Rudolf
2 Hu, Yong
2 Johnson, Francis E. A.
2 Kresch, Andrew
2 Kucharz, Wojciech
2 Kvirikashvili, T. G.
2 Lam, Tsit-Yuen
2 Levine, Marc Noel
2 Limaye, Nirmala B.
2 Mboro, René
2 McDonald, Bernard R.
2 Merkur’ev, Aleksandr Sergeevich
...and 296 more Authors
all top 5

Cited in 93 Serials

94 Journal of Algebra
35 Journal of Pure and Applied Algebra
31 Communications in Algebra
20 Mathematische Zeitschrift
19 Transactions of the American Mathematical Society
18 Mathematische Annalen
15 Advances in Mathematics
14 Manuscripta Mathematica
13 Proceedings of the American Mathematical Society
12 Inventiones Mathematicae
11 Duke Mathematical Journal
11 Journal of Mathematical Sciences (New York)
9 Israel Journal of Mathematics
8 Archiv der Mathematik
8 Compositio Mathematica
8 Journal of Soviet Mathematics
8 Comptes Rendus. Mathématique. Académie des Sciences, Paris
6 St. Petersburg Mathematical Journal
6 Documenta Mathematica
6 Journal of Algebra and its Applications
5 Journal of Number Theory
5 Transformation Groups
5 Journal of \(K\)-Theory
4 Annales Scientifiques de l’École Normale Supérieure. Quatrième Série
4 Publications Mathématiques
4 \(K\)-Theory
4 Indagationes Mathematicae. New Series
4 Journal of Algebraic Geometry
4 Algebra & Number Theory
3 Rocky Mountain Journal of Mathematics
3 Applied Categorical Structures
2 Mathematical Proceedings of the Cambridge Philosophical Society
2 Beiträge zur Algebra und Geometrie
2 Annales de l’Institut Fourier
2 Journal für die Reine und Angewandte Mathematik
2 Results in Mathematics
2 Journal of the American Mathematical Society
2 Journal of the Ramanujan Mathematical Society
2 Linear Algebra and its Applications
2 Journal de Théorie des Nombres de Bordeaux
2 Advances in Applied Clifford Algebras
2 Izvestiya: Mathematics
2 Algebras and Representation Theory
2 Annals of Mathematics. Second Series
2 Central European Journal of Mathematics
2 Journal of the Institute of Mathematics of Jussieu
2 Oberwolfach Reports
2 Bulletin de la Société Mathématique de France. Supplément. Mémoires
2 Journal of Homotopy and Related Structures
2 Research in the Mathematical Sciences
2 European Journal of Mathematics
2 Annals of \(K\)-Theory
1 Archive for History of Exact Sciences
1 Linear and Multilinear Algebra
1 Acta Mathematica Vietnamica
1 American Journal of Mathematics
1 Applied Mathematics and Computation
1 Bulletin de la Société Mathématique de France
1 Cahiers de Topologie et Géométrie Différentielle Catégoriques
1 Geometriae Dedicata
1 Glasgow Mathematical Journal
1 The Journal of Symbolic Logic
1 Memoirs of the American Mathematical Society
1 Michigan Mathematical Journal
1 Nagoya Mathematical Journal
1 Proceedings of the Edinburgh Mathematical Society. Series II
1 Proceedings of the Japan Academy. Series A
1 Proceedings of the London Mathematical Society. Third Series
1 Rendiconti del Circolo Matemàtico di Palermo. Serie II
1 Rendiconti del Seminario Matematico della Università di Padova
1 Semigroup Forum
1 Topology and its Applications
1 Acta Mathematica Hungarica
1 Forum Mathematicum
1 Journal de Mathématiques Pures et Appliquées. Neuvième Série
1 Proceedings of the Indian Academy of Sciences. Mathematical Sciences
1 Vestnik St. Petersburg University. Mathematics
1 Russian Mathematics
1 Bulletin of the Belgian Mathematical Society - Simon Stevin
1 Sbornik: Mathematics
1 Vietnam Journal of Mathematics
1 Geometry & Topology
1 Discrete Mathematics and Theoretical Computer Science. DMTCS
1 Journal of the European Mathematical Society (JEMS)
1 Acta Mathematica Sinica. English Series
1 Communications in Contemporary Mathematics
1 Advances in Geometry
1 Mediterranean Journal of Mathematics
1 Sarajevo Journal of Mathematics
1 Journal of Noncommutative Geometry
1 Arabian Journal of Mathematics
1 Forum of Mathematics, Pi
1 Forum of Mathematics, Sigma

Citations by Year