We give a polynomial counterexample to both the Markus Yamabe conjecture and the discrete Markus Yamabe problem for all dimensions 3.
A Counterexample for a Conjecture about the Catenarity of Polynomial Rings
✍ Scribed by Mabrouk Ben Nasr; Noômen Jarboui
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 64 KB
- Volume
- 248
- Category
- Article
- ISSN
- 0021-8693
No coin nor oath required. For personal study only.
✦ Synopsis
This paper solves a long-standing open question: it is known that, if R is a Noetherian ring such that R X is catenarian, then so is R X Y , and, hence, R is universally catenarian; yet the non-Noetherian case remains unsolved. We do provide here an answer with a two-dimensional coequidimensional counterexample. 2002 Elsevier Science (USA)
📜 SIMILAR VOLUMES
## Abstract In this paper the conjecture on the __k__th upper multiexponent of primitive matrices proposed by R.A. Brualdi and Liu are completely proved.
Gilmer and Heinzer proved that given a reduced ring R, a polynomial f divides a monic polynomial in R[X] if and only if there exists a direct sum decomposition of R = R0 ⊕ . . . ⊕ Rm (m ≤ deg f ), associated to a fundamental system of idempotents e0, . . . , em, such that the component of f in each