Abstract:
For a family of local algebras of semidihedral type over an algebraically closed field of characteristic 2, the Hochschild cohomology algebra is described in terms of generators and relations. The calculations are based on the construction of a bimodule resolution for the algebras in question. As a consequence, the Hochschild cohomology algebra is described for the group algebras of semidihedral groups.
Keywords:
algebras of semidihedral type, Hochschild cohomology, semidihedral groups.
Citation:
A. I. Generalov, “Hochschild cohomology of algebras of semidihedral type. I. Group algebras of semidihedral groups”, Algebra i Analiz, 21:2 (2009), 1–51; St. Petersburg Math. J., 21:2 (2010), 163–201
This publication is cited in the following 22 articles:
A. I. Generalov, “Hochschild Cohomology for Algebras of Semidihedral Type. X. Cohomology Algebra for the Exceptional Local Algebras”, J Math Sci, 272:3 (2023), 376
A. I. Generalov, “Kogomologii Khokhshilda algebr poludiedralnogo tipa, X. Algebra kogomologii isklyuchitelnykh lokalnykh algebr”, Voprosy teorii predstavlenii algebr i grupp. 37, Zap. nauchn. sem. POMI, 500, POMI, SPb., 2021, 51–111
Taillefer R., “First Hochschild Cohomology Group and Stable Equivalence Classification of Morita Type of Some Tame Symmetric Algebras”, Homol. Homotopy Appl., 21:1 (2019), 19–48
A. I. Generalov, D. A. Nikulin, “Kogomologii Khokhshilda algebr poludiedralnogo tipa, IX. Isklyuchitelnye lokalnye algebry”, Voprosy teorii predstavlenii algebr i grupp. 34, Zap. nauchn. sem. POMI, 478, POMI, SPb., 2019, 17–31
A. I. Generalov, A. V. Semenov, “Kogomologii Khokhshilda algebr kvaternionnogo tipa. IV: Algebra kogomologii dlya isklyuchitelnykh lokalnykh algebr”, Voprosy teorii predstavlenii algebr i grupp. 34, Zap. nauchn. sem. POMI, 478, POMI, SPb., 2019, 32–77
A. I. Generalov, N. Yu. Kosovskaia, “Hochschild cohomology of algebras of dihedral type. VIII. The Hochschild cohomology algebra for the family D(2B)(k,s,0) in characteristic 2”, J. Math. Sci. (N. Y.), 243:4 (2019), 535–560
A. I. Generalov, M. A. Filippov, “Hochschild cohomology for algebras of dihedral type, VII. The family D(3R)”, J. Math. Sci. (N. Y.), 240:4 (2019), 408–427
A. I. Generalov, “Hochschild cohomology for algebras of semidihedral type. VI. The family SD(2B)2 in characteristic different from 2”, J. Math. Sci. (N. Y.), 222:4 (2017), 404–416
A. I. Generalov, “Hochschild cohomology for algebras of semidihedral type. VII. Algebras with a small parameter”, J. Math. Sci. (N. Y.), 232:5 (2018), 622–634
A. I. Generalov, I. M. Zilberbord, “Hochschild cohomology for algebras of semidihedral type. V. The family SD(3K)”, J. Math. Sci. (N. Y.), 219:4 (2016), 493–512
A. I. Generalov, D. B. Romanova, “Hochschild cohomology for algebras of dihedral type. VI. The family D(2B)(k,s,1)”, St. Petersburg Math. J., 27:6 (2016), 923–940
A. I. Generalov, N. Yu. Kosovskaia, “Hochschild cohomology for algebras of dihedral type. IV. The family D(2B)(k,s,0)”, J. Math. Sci. (N. Y.), 209:4 (2015), 522–548
A. I. Generalov, I. M. Zilberbord, D. B. Romanova, “Hochschild cohomology for algebras of dihedral type. V. The family D(3K) in characteristic different from 2”, J. Math. Sci. (N. Y.), 219:3 (2016), 385–404
A. I. Generalov, “Hochschild cohomology for algebras of semidihedral type. IV. The cohomology algebra for the family SD(2B)2(k,t,c) in the case c=0”, J. Math. Sci. (N. Y.), 202:3 (2014), 360–394
A. I. Generalov, “Hochschild cohomology for algebras of semidihedral type. III. The family SD(2B)2 in characteristic 2”, J. Math. Sci. (N. Y.), 192:2 (2013), 200–214
A. I. Generalov, “Hochschild cohomology for algebras of semidihedral type, II. Local algebras”, J. Math. Sci. (N. Y.), 180:3 (2012), 278–314
M. A. Pustovykh, “Hochschild cohomology ring of Möbius algebras”, J. Math. Sci. (N. Y.), 183:5 (2012), 692–714
A. I. Generalov, “Cohomology of algebras of semidihedral type. VIII”, J. Math. Sci. (N. Y.), 188:5 (2013), 582–590
A. I. Generalov, “Hochschild cohomology of algebras of dihedral type. II. Local algebras”, J. Math. Sci. (N. Y.), 171:3 (2010), 357–379