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Halmos: Question about proof of Transfinite recursion theorem

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#elementary-set-theory #set-theory #well-orders
41
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Well-orderded set $P$ cannot be order-isomorphic to the set of predessors of $p \in P$

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#elementary-set-theory #fake-proofs #well-orders
391
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The Well-Ordering Theorem and Uncountably Infinite Sets

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#set-theory #axiom-of-choice #well-orders
46
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Discussing Ex 13. Section 3. p-29, Munkres' Topology 2E.

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#general-topology #elementary-set-theory #solution-verification #order-theory #well-orders
77
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Partially ordered sets and ordinals

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#set-theory #order-theory #ordinals #well-orders
87
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Discussion of Exercise 9, section 4 on page 35 of Munkres’ Topology 2E.

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#number-theory #elementary-set-theory #solution-verification #order-theory #well-orders
62
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Order-Preserving Bijective Function

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#functions #elementary-set-theory #proof-writing #well-orders
69
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A element can be a set?

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#set-theory #well-orders
49
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Convex subspace of linear continuum is connected [Theorem 24.1, Munkres]

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#general-topology #well-orders
87
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Induction extended to ordered pairs: Application of the First Principle of Finite Induction to proving Bertrand’s Ballot Theorem.

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#probability #induction #well-orders
92
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I dont understand induction on well-orders

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#discrete-mathematics #set-theory #induction #well-orders
111
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Is the comparison of well-orders theorem true for classes?

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#set-theory #well-orders
228
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Well-ordering principle and an infinite chessboard

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#contest-math #well-orders
89
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Description of largest possible countable set / number

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#sequences-and-series #ordinals #well-orders
139
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Cantor-Bendixson derivative sets

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#general-topology #set-theory #order-theory #ordinals #well-orders

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