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arXiv 1006.3285math.GTmath.SG
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勒让德实心圆环的HOMFLY-PT多项式和正规定则

HOMFLY-PT polynomial and normal rulings of Legendrian solid torus links

Dan Rutherford

摘要:

证明了对于$S^1$的$1$ -喷流空间中的任意Legendrian链$L$,$2$ -分次统治多项式$R^2_L(z)$由Thurston-Bennequin数和HOMFLY-PT多项式决定.具体来说,我们恢复$R^2_L(z)$作为一个系数的HOMFLY-PT多项式的一个特定的专业化。此外,我们表明,这种专业化可以解释为标准的内积的对称函数的代数,往往是确定的某个子代数的HOMFLY-PT绞模的固体环面。在对比的$2$ -分级的情况下,我们能够使用$0$ -分级统治多项式来区分许多同伦非平凡的Legendrian链接相同的经典不变量。

英文摘要:

We show that for any Legendrian link $L$ in the $1$-jet space of $S^1$ the $2$-graded ruling polynomial, $R^2_L(z)$, is determined by the Thurston-Bennequin number and the HOMFLY-PT polynomial. Specifically, we recover $R^2_L(z)$ as a coefficient of a particular specialization of the HOMFLY-PT polynomial. Furthermore, we show that this specialization may be interpreted as the standard inner product on the algebra of symmetric functions that is often identified with a certain subalgebra of the HOMFLY-PT skein module of the solid torus. In contrast to the $2$-graded case, we are able to use $0$-graded ruling polynomials to distinguish many homotopically non-trivial Legendrian links with identical classical invariants.

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