Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Lefschetz duality intersection homology   We prove a Lefschetz duality result for intersection homology. Usually, this
result applies to pseudomanifolds with boundary which are assumed to have a
"collared neighborhood of their boundary". Our duality does not need this
assumption and is a generalization of the classical one.

5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
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The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
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The categories of this paper are: nucl-ex
16
The categories of this paper are: stat
23
The categories of this paper are: solv-int
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The categories of this paper are: eess
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The categories of this paper are: hep-ex
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The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
3
The categories of this paper are: physics
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The categories of this paper are: acc-phys
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The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci