Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Back stable K-theory Schubert calculus   We study the back stable $K$-theory Schubert calculus of the infinite flag
variety. We define back stable (double) Grothendieck polynomials and double
$K$-Stanley functions and establish coproduct expansion formulae. Applying work
of Weigandt, we extend our previous results on bumpless pipedreams from
cohomology to $K$-theory. We study finiteness and positivity properties of the
ring of back stable Grothendieck polynomials, and divided difference operators
in $K$-homology.

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The categories of this paper are: acc-phys
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The categories of this paper are: nucl-th
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The categories of this paper are: stat
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The categories of this paper are: q-bio
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The categories of this paper are: atom-ph
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The categories of this paper are: cs
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The categories of this paper are: bayes-an
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The categories of this paper are: ao-sci
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The categories of this paper are: physics
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The categories of this paper are: nucl-ex
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The categories of this paper are: adap-org
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The categories of this paper are: eess
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The categories of this paper are: cond-mat
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The categories of this paper are: hep-lat
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The categories of this paper are: math-ph
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The categories of this paper are: q-fin