Download Alexander Ideals of Links by J. A. Hillman PDF

By J. A. Hillman

Show description

Read or Download Alexander Ideals of Links PDF

Similar algebra & trigonometry books

A Concrete Introduction to Higher Algebra

This publication is an off-the-cuff and readable creation to raised algebra on the post-calculus point. The ideas of ring and box are brought via research of the ordinary examples of the integers and polynomials. a powerful emphasis on congruence sessions leads in a normal strategy to finite teams and finite fields.

Study Guide for College Algebra and Trigonometry

A latest method of university algebra and right-triangle trigonometry is supported by means of non-compulsory snap shots calculator fabric.

Extra resources for Alexander Ideals of Links

Example text

O. <(~k(Aj (Rr) ~ ~ _ j t M ) [|4;pages 515-518] j ~ I. n-k+l and f(n-k+l) = I. ~k M = Ann(AkM) = pe(n-k+l) Therefore = (Ak_I(M)/Ak(M)). H ~ n}. Er+k(M) ~ Er+k_l(M)} when R is a discrete valuation ring, then we may extend this result as follows.

D. ll. Link module sequences his work on the A-modules A(L) and G'/G" Crowell defined a link In module sequence as an exact sequence 0 ---+ B ---+ A ---+ I ---+ 0 of A-modules (4) such that A has a presentation with n + I generators n relations (for some n) and where I is the augmentation ideal of A. arguments of Theorem 3 apply in this slightly more general showing for instance (i) that El(A) = (AI(A))I. The first elementary In [40] and setting, Crowell showed that ideal E l of A annihilates B.

D. A(L) The second of the spectral F(V)'/F(~)" o__r lemma. d. d. d. G'/G" sequence duality Note also that the resolution sequence Proof Moreover are also iu~nediate consequences of Chapter of IRV). exact = ZZ q follows from the long exact to the Crowell and the fact that e q-I I = e q ~ (2) and exact for q > 0. // sequence in the 45 An immediate consequence of this lemma is that if AI(L ) # 0 then G'/G" has a square presentation matrix if and only if ~ ~ 3. d. d. A(L) ~ p - I . Since projective free, a torsion module has a short projective resolution A-modules are if and only if it has a square presentation matrix.

Download PDF sample

Rated 4.18 of 5 – based on 37 votes