Re: Does Mathematics Exist? (was Re: Cantor Diagonal Proof)

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Sujet : Re: Does Mathematics Exist? (was Re: Cantor Diagonal Proof)
De : ldo (at) *nospam* nz.invalid (Lawrence D'Oliveiro)
Groupes : comp.theory
Date : 11. Apr 2025, 08:23:11
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <vtag0v$vqm0$1@dont-email.me>
References : 1 2
User-Agent : Pan/0.162 (Pokrosvk)
On Tue, 08 Apr 2025 17:00:48 GMT, Mr Flibble wrote:

It is correct to say that infinitesimals don't exist ...

Remember why “imaginary” numbers were called “imaginary”: because it was
assumed that, unlike “real” numbers, there was no way they could possibly
relate to anything in the real physical world.

How wrong that turned out to be.

Infinitesimals are rather fundamental to calculus, or at least its
formulation using Leibniz notation. I have an Ian Stewart book somewhere
which, as I recall, mentioned some other real-world uses for them.

Date Sujet#  Auteur
8 Apr 25 * Re: Cantor Diagonal Proof45Andy Walker
8 Apr 25 +* Re: Cantor Diagonal Proof33Richard Heathfield
8 Apr 25 i`* Re: Cantor Diagonal Proof32Andy Walker
8 Apr 25 i +* Re: Cantor Diagonal Proof2Richard Heathfield
8 Apr 25 i i`- Re: Cantor Diagonal Proof1Andy Walker
8 Apr 25 i +* Re: Cantor Diagonal Proof2Fred. Zwarts
9 Apr 25 i i`- Re: Cantor Diagonal Proof1Richard Damon
9 Apr 25 i `* Re: Cantor Diagonal Proof27wij
9 Apr 25 i  `* Re: Cantor Diagonal Proof26Richard Heathfield
9 Apr 25 i   `* Re: Cantor Diagonal Proof25wij
9 Apr 25 i    `* Re: Cantor Diagonal Proof24Richard Heathfield
9 Apr 25 i     `* Re: Cantor Diagonal Proof23wij
9 Apr 25 i      `* Re: Cantor Diagonal Proof22Richard Heathfield
9 Apr 25 i       `* Re: Cantor Diagonal Proof21wij
9 Apr 25 i        `* Re: Cantor Diagonal Proof20Richard Heathfield
9 Apr 25 i         `* Re: Cantor Diagonal Proof19wij
9 Apr 25 i          `* Re: Cantor Diagonal Proof18Richard Heathfield
10 Apr 25 i           `* Re: Cantor Diagonal Proof17wij
11 Apr 25 i            `* Re: Cantor Diagonal Proof16Keith Thompson
11 Apr 25 i             `* Re: Cantor Diagonal Proof15wij
11 Apr 25 i              +* Re: Cantor Diagonal Proof8Alan Mackenzie
11 Apr 25 i              i`* Re: Cantor Diagonal Proof7wij
11 Apr 25 i              i `* Re: Cantor Diagonal Proof6Richard Damon
11 Apr 25 i              i  `* Re: Cantor Diagonal Proof5wij
11 Apr 25 i              i   +- Re: Cantor Diagonal Proof1Richard Heathfield
11 Apr 25 i              i   `* Re: Cantor Diagonal Proof3Richard Damon
11 Apr 25 i              i    `* Re: Cantor Diagonal Proof2wij
11 Apr 25 i              i     `- Re: Cantor Diagonal Proof1Richard Damon
11 Apr 25 i              `* Re: Cantor Diagonal Proof6Keith Thompson
11 Apr 25 i               `* Re: Cantor Diagonal Proof5wij
11 Apr 25 i                +* Re: Cantor Diagonal Proof2wij
11 Apr 25 i                i`- Re: Cantor Diagonal Proof1Richard Heathfield
11 Apr 25 i                +- Re: Cantor Diagonal Proof1Keith Thompson
12 Apr 25 i                `- Re: Cantor Diagonal Proof1Richard Heathfield
8 Apr 25 +* Re: Cantor Diagonal Proof10Andy Walker
8 Apr 25 i+* Re: Cantor Diagonal Proof6Keith Thompson
9 Apr 25 ii+* Re: Cantor Diagonal Proof4Alan Mackenzie
9 Apr 25 iii`* Re: Cantor Diagonal Proof3Alan Mackenzie
9 Apr 25 iii `* Re: Cantor Diagonal Proof2Alan Mackenzie
9 Apr 25 iii  `- Re: Cantor Diagonal Proof1Alan Mackenzie
11 Apr 25 ii`- Re: Does Mathematics Exist? (was Re: Cantor Diagonal Proof)1Lawrence D'Oliveiro
8 Apr 25 i`* Re: Cantor Diagonal Proof3Andy Walker
9 Apr 25 i `* Re: Cantor Diagonal Proof2Richard Damon
14 Apr 25 i  `- Re: Cantor Diagonal Proof1Lawrence D'Oliveiro
11 Apr 25 `- Re: Does Mathematics Exist? (was Re: Cantor Diagonal Proof)1Lawrence D'Oliveiro

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