Comment on How do students who are always involved in mathematics and physics get to know about sex?

farmgineer@nord.pub ⁨1⁩ ⁨week⁩ ago

• TwilightKiddy@programming.dev ⁨1⁩ ⁨week⁩ ago

  ∪ is for “union”, aka “disjunction for sets”, ∈ is for “includes”, ⊂is for “subset”, don’t confuse ⊂ with ⊆, which also allows for both operands to be the same set.

  Difference between ∈ and ⊂ is that former takes an element and a set as operands, latter takes two sets.

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  • DeadDigger@lemmy.zip ⁨1⁩ ⁨week⁩ ago

    What does physical exercise of bdsm leaning bottoms have to do with this

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    • TwilightKiddy@programming.dev ⁨1⁩ ⁨week⁩ ago

      I don’t believe the current paper defines a way to describe “bdsm leaning”, but for “bottoms” you can easily define x, x ∈ H, such that there exists at least one h, h ∈ H, f(h,x) > 0 and no h’, h’ ∈ H, f(x, h’) > 0. If the second condition is not met, conventionally x is regarded to be a “swap”, if the first one is not met, we have a “top”. Hope that helps.

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      • DeadDigger@lemmy.zip ⁨1⁩ ⁨week⁩ ago

        Sub-set

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