Gluing semigroups and strongly indispensable free resolutions
2019 ◽
Vol 29
(02)
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pp. 263-278
Keyword(s):
We study strong indispensability of minimal free resolutions of semigroup rings focusing on the operation of gluing used in the literature to take examples with a special property and produce new ones. We give a naive condition to determine whether gluing of two semigroup rings has a strongly indispensable minimal free resolution. As applications, we determine simple gluings of [Formula: see text]-generated non-symmetric, [Formula: see text]-generated symmetric and pseudo symmetric numerical semigroups as well as obtain infinitely many new complete intersection semigroups of any embedding dimensions, having strongly indispensable minimal free resolutions.
1990 ◽
Vol 118
◽
pp. 203-216
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Keyword(s):
Keyword(s):
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2017 ◽
Vol 16
(01)
◽
pp. 1750018
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1996 ◽
Vol 19
(1)
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pp. 185-192
2019 ◽
Vol 18
(06)
◽
pp. 1950118
1990 ◽
Vol 49
(3)
◽
pp. 364-385
Keyword(s):
2019 ◽
Vol 223
(4)
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pp. 1411-1426
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2017 ◽
Vol 69
(6)
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pp. 1274-1291
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