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  • silent_water [she/her]
    ·
    edit-2
    2 years ago

    I didn't say it was? I'm comparing the sizes of sets by noticing the enumeration of the first set and that same enumeration applies to the second set.

      • silent_water [she/her]
        ·
        2 years ago

        no, emphatically:

        1. an infinite set is countable if there is a one to one mapping between it and the natural numbers. this is easy with the first set as you can literally count off, 1, 2, 3, etc..
        2. the second set is countable in exactly the same way.

        this is extremely basic set theory. you're deeply misinformed.

          • silent_water [she/her]
            ·
            2 years ago

            no shit. I'm saying you can't use an enumerable set to produce a mapping with the reals. the natural numbers are an infinite set yet are definitionally countable as they are the ordinals.

            disengage, you're arguing nonsense with someone with a literal degree in mathematics.

              • ella [any]MA
                ·
                2 years ago

                Respect people's right to disengage

              • silent_water [she/her]
                ·
                2 years ago

                that's the conceit of the joke, the idea that you can use an enumerated list and map them to the reals. if you could do such a thing, you'd immediately fall prey to Cantor's diagonalization argument. the train tracks are a continuum. they can be mapped to the reals. a neverending list of people cannot.

                  • WoofWoof91 [comrade/them]
                    ·
                    2 years ago

                    The premise of the joke is incorrect because the joke thinks “infinity = infinity”.

                    i fucking hate maths

              • ella [any]MA
                ·
                2 years ago

                Respect people’s right to disengage

          • silent_water [she/her]
            ·
            2 years ago

            I'm pretty sure it's just a VOOOOTE joke about how there's no difference between the two parties, except aimed at math nerds.

      • replaceable [he/him]
        ·
        edit-2
        2 years ago

        Do you pull the lever killing one person for every integer

        Or do you do nothing, allowing the trolley to kill one person for every real number

        The meme establishes the same mapping on both infinities so both infinities have the same cardinality meaning that actually the second infinity is not continuum but aleph null