Degree bound for toric envelope of a linear algebraic group
Degree bound for toric envelope of a linear algebraic group
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线性代数群的复曲面包络的度界
DOI:
10.1090/mcom/3695
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发表时间:
2021
影响因子:
2
通讯作者:
Pogudin, Gleb
中科院分区:
文献类型:
--
作者:
Amzallag, Eli;Minchenko, Andrei;Pogudin, Gleb
Algorithms working with linear algebraic groups often represent them via defining polynomial equations. One can always choose defining equations for an algebraic group to be of degree at most the degree of the group as an algebraic variety. However, the degree of a linear algebraic groupcan be arbitrarily large even for. One of the key ingredients of Hrushovski’s algorithm for computing the Galois group of a linear differential equation was an idea to “approximate” every algebraic subgroup ofby a “similar” group so that the degree of the latter is bounded uniformly in. Making this uniform bound computationally feasible is crucial for making the algorithm practical.
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