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1. • CommentRowNumber1.
   • CommentAuthorDavid_Corfield
   • CommentTimeOct 16th 2017
   • PermaLink
   Author: David_Corfield
   Format: MarkdownItexCan anyone help out with this [MO question](https://mathoverflow.net/q/283574/447)? I remember wondering about that myself, and not finding any answer.

   Can anyone help out with this MO question? I remember wondering about that myself, and not finding any answer.

2. • CommentRowNumber2.
   • CommentAuthorTodd_Trimble
   • CommentTimeOct 16th 2017
   • (edited Oct 16th 2017)
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   Author: Todd_Trimble
   Format: MarkdownItexDon't know off the bat, but looking at our entry [[rig category]], I was surprised to see a result referred to as Baez's *conjecture* (that the category of finite sets and bijections is the initial example in a suitable sense). Surely this wouldn't be such a challenge to prove, would it?

   Don’t know off the bat, but looking at our entry rig category, I was surprised to see a result referred to as Baez’s conjecture (that the category of finite sets and bijections is the initial example in a suitable sense). Surely this wouldn’t be such a challenge to prove, would it?

3. • CommentRowNumber3.
   • CommentAuthorDavid_Corfield
   • CommentTimeOct 16th 2017
   • (edited Oct 16th 2017)
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   Author: David_Corfield
   Format: MarkdownItexI see John had written "Conjecture (John Baez)" and Toby gave it the section name, "Baez’s conjecture". I guess the inability to represent two monoidal operations is impinging on Peirce and Spencer Brown in their respective decisions to use juxtaposition to represent conjunction and disjunction.

   I see John had written “Conjecture (John Baez)” and Toby gave it the section name, “Baez’s conjecture”.

   I guess the inability to represent two monoidal operations is impinging on Peirce and Spencer Brown in their respective decisions to use juxtaposition to represent conjunction and disjunction.