Set Theory 1.4 : Well Orders, Order Isomorphisms, and Ordinals

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In this video, I introduce well ordered sets and order isomorphisms, as well as segments. I use these new ideas to prove that all well ordered sets are order isomorphic to some ordinal.

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Fematika, you are *the* best math teacher on YT. 👍👍👍

polopadic
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can you post once a week or is that too much for school?
I appreciate all of your vids and I understand you have a lot of schooling to do.

duckymomo
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Something about this video is deeply unsettling

Joe-kqfg
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U have jumped very quietly, did not enjoy

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