(p,\l)-Koszul algebras and modules, II

This paper is a continuous work of [14], where the notions of (p,l)-Koszul algebra and (p,l)-Koszul module were first introduced. More precisely, some new criteria for a positively graded algebra to be (p,l)-Koszul are provided. We also generalize (p,l)-Koszul objects to the nongraded case and define the so-called quasi-(p,l)-Koszul objects. Further, the relationships between (quasi-) (p,l)-Koszul modules and minimal Horseshoe Lemma are established.

(p, λ)-Koszul algebras and modules, II

This paper is a continuous work of [14], where the notions of (p,l)-Koszul algebra and (p,l)-Koszul module were first introduced. More precisely, some new criteria for a positively graded algebra to be (p,l)-Koszul are provided. We also generalize (p,l)-Koszul objects to the nongraded case and define the so-called quasi-(p,l)-Koszul objects. Further, the relationships between (quasi-) (p,l)-Koszul modules and minimal Horseshoe Lemma are established.

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  • Artin, M., Schelter, W. F.: Graded algebras of global dimension 3, Adv. Math., 66, 171-216 (1987).
  • Beilinson, A., Ginszburg, V., Soergel, W.: Koszul duality patterns in representation theory, J. Amer. Math. Soc., 9, 473–525 (1996).
  • Berger, R.: Koszulity for nonquadratic algebras, J. Alg., 239, 705–734 (2001).
  • Brenner, S., Butler, M. C. R., King, A. D.: Periodic algebras which are almost Koszul, Alg. Represent. Theory., 5, 331–367 (2002).
  • Cassidy, T., Shelton, B.: Generalizing the notion of a Koszul algebra, Math. Z., 260, 93–114 (2008).
  • Green, E. L., Marcos, E. N.: δ -Koszul algebras, Comm. Alg., 33, 1753–1764 (2005).
  • Green, E. L., Marcos, E. N., Martinez-Villa, R., Zhang, P.: D -Koszul algebras, J. Pure Appl. Alg., 193, 141–162 (2004).
  • Green, E. L., Martinez-Villa, R.: Koszul and Yoneda algebras, Representation theory of algebras (Cocoyoc, 1994), CMS Conference Proceedings, American Mathematical Society, Providence, RI, 18, 247–297 (1996).
  • Green, E. L., Snashall, N.: Finite generation of Ext for a generalization of D -Koszul algebras, J. Alg., 295, 458–472 (2006).
  • He, J. W., Lu, D. M.: Higher Koszul Algebras and A-infinity Algebras, J. Alg., 293, 335–362 (2005).
  • He, J. W., Van Oystaeyen, F., Zhang, Y. H.: Derived H -module endomorphism rings, Glasgow Math. J., 52, 649–661 (2010).
  • Lu, D. M., Si, J. R.: Koszulity of algebras with non-pure resolutions, Comm. Alg., 38, 68–85 (2010).
  • L¨ u, J. F., He, J. W., Lu, D. M.: Piecewise-Koszul algebras, Sci. China Ser. A., 50, 1785–1794 (2007).
  • L¨ u, J. F., Zhao, Z. B.: (p, λ) -Koszul algebras and modules, Indian J. Pure App. Math., 41, 443–473 (2010). Polishchuk, A., Positselski, L.: Quadratic algebras, University Lectures Series, 37, American Mathematics Sosiety, Providence, 2005.
  • Priddy, S.: Koszul resolutions, Trans. Amer. Math. Soc., 152, 39–60 (1970).
  • Wang, G. J., Li, F.: On minimal Horseshoe Lemma, Taiwanese J. Math., 12, 373–387 (2008).