منابع مشابه
Nontriviality of SK1 (R [MJ)
The main result of this paper is as follows: For any commutative regular (actually even K2-regular) ring R and any finitely generated intermediate monoid ZP+ c A4 c Q’+ (for some natural r) the following conditions are equivalent: (a) A4 zE:, (b) R[M] is K,-regular, (c) M is seminormal and SK,(R) = SK,(R[M]) (i.e. the natural homomorphism SK,(R) -SK,(R[M]) is an isomorphism), and, if in additio...
متن کاملComparing Absolute and Relative Gromov–witten Invariants
This note compares the usual (absolute) Gromov-Witten invariants of a symplectic manifold with the invariants that count the curves relative to a (symplectic) divisor D. We give explicit examples where these invariants differ even though it seems at first that they should agree, for example when counting genus zero curves in a class β such that β ·D = 0. The main tool is the decomposition formu...
متن کاملcomparing the second multiplicative zagreb coindex with some graph invariants
the second multiplicative zagreb coindex of a simple graph $g$ is defined as: $${overline{pi{}}}_2left(gright)=prod_{uvnotin{}e(g)}d_gleft(uright)d_gleft(vright),$$ where $d_gleft(uright)$ denotes the degree of the vertex $u$ of $g$. in this paper, we compare $overline{{pi}}_2$-index with some well-known graph invariants such as the wiener index, schultz index, eccentric co...
متن کاملComparing the Uniformity Invariants of Null Sets for Different Measures
The uniformity invariant for Lebesgue measure is defined to be the least cardinal of a non-measurable set of reals, or, equivalently, the least cardinal of a set of reals which is not Lebesgue null. This has been studied intensively for the past 30 years and much of what is known can be found in [?] and other standard sources. Among the well known results about this cardinal invariant of the co...
متن کاملComparing Finite Type Invariants of Knots and Integral Homology
Using elementary counting methods of weight systems for nite type invariants of knots and integral homology 3-spheres, in the spirit of B-NG], we answer positively three questions raised in Ga]. In particular, we exhibit a one-to-one map from the space of nite type invariants of integral homology 3-spheres to the space of nite type invariants of knots in S 3 .
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Algebras and Representation Theory
سال: 2011
ISSN: 1386-923X,1572-9079
DOI: 10.1007/s10468-011-9327-x