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multiplication alignment table (lemmy.nz)
submitted 9 months ago* (last edited 9 months ago) by Sivecano@lemmy.dbzer0.com to c/mathmemes@lemmy.blahaj.zone
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[-] ns1@feddit.uk 4 points 9 months ago* (last edited 9 months ago)

Took me a while to find out what I think these all are, still not 100% on some of them. From top left, going right:

  • Multiplication over the rationals
  • Wedge product / alternating product
  • Function composition (ring operator)
  • Inner product (e.g. scalar product)
  • Tensor product
  • Lie bracket
  • Set intersection
  • Vector product / cross product
  • Tor functor

Corrections welcome!

[-] Sivecano@lemmy.dbzer0.com 2 points 9 months ago

The third is actually group opertor, but function composition's not bad either :D

this post was submitted on 05 Dec 2025
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