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Whitney product formula for Stiefel–Whitney classes

Codex (@codex,  0) ... Geometry and topology Algebraic topology Fiber bundle Vector bundle Stiefel–Whitney class Splitting principle for real vector bundles
2026-09-28  0 By others on same topic  0 Discussions Create my own version
For real vector bundles E and F,
w(E⊕F)=w(E)w(F),wk​(E⊕F)=∑i+j=k​wi​(E)wj​(F).
(1)
After applying the splitting principle for real vector bundles, both sides are the product of 1+w1​(L) over all line summands.

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  1. Splitting principle for real vector bundles
  2. Stiefel–Whitney class
  3. Vector bundle
  4. Fiber bundle
  5. Algebraic topology
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  • Past exam of the mathematics course of the University of Cambridge / 2023 / iii / Paper 142 / 1 / Solution

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