| 18-XX |
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Category theory; homological algebra For commutative rings see 13Dxx, for associative rings 16Exx, for groups 20Jxx, for topological groups and related structures 57Txx; see also 55Nxx and 55Uxx for algebraic topology |
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18Fxx |
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Categories and geometry |
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18F05 |
Local categories and functors |
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18F10 |
Grothendieck topologies [See also 14F20] |
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18F15 |
Abstract manifolds and fiber bundles [See also 55Rxx, 57Pxx] |
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18F20 |
Presheaves and sheaves [See also 14F05, 32C35, 32L10, 54B40, 55N30] |
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18F25 |
Algebraic $K$-theory and $L$-theory [See also 11Exx, 11R70, 11S70, 12-XX, 13D15, 14Cxx, 16E20, 19-XX, 46L80, 57R65, 57R67] |
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18F30 |
Grothendieck groups [See also 13D15, 16E20, 19Axx] |
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18F99 |
None of the above, but in this section |
