Re: The set of necessary FISONs

on 3/3/2025, WM supposed :

On 02.03.2025 20:28, FromTheRafters wrote:

WM expressed precisely :

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Two mistakes. FISONs have been created by Virgil and me. Therefore we know what their definition is. They start with 1. Ascending order is not a feature of sets but of sequences.

You didn't create FISONs, you created a acronym the parts of which were already defined. What sense does a 'segment' mean if the elements have no rank?

Yes, but your notation of {3,2,1} is not a sequence but a set.

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Therefore the order is irrelevant.

Then how is it a segment of a sequence.

A sequence would be (3,2,1). You write sets and try to treat them as segments of sequences.

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Segments are subsets and are treated as subsets.

How convenient.