Posina Venkata Rayudu’s Reviews > Conceptual Mathematics: A First Introduction to Categories > Status Update

Posina Venkata Rayudu
Posina Venkata Rayudu is on page 294 of 383
One thing that always struck me was Bill Lawvere's observation that the dual of the usual definition of function as a subset of a product s.t.... namely as a quotient of a sum s.t.... actually corresponds closely to the usual picture we draw when we introduce functions for the first time.
Michael Barr
http://conceptualmathematics.wordpres...
Aug 23, 2013 04:22PM
Conceptual Mathematics: A First Introduction to Categories

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Posina Venkata Rayudu’s Previous Updates

Posina Venkata Rayudu
Posina Venkata Rayudu is starting
I want to understand: form a cohesive body of thought by putting together those pieces of my knowledge that fit together.
Jun 22, 2022 11:06AM
Conceptual Mathematics: A First Introduction to Categories


Posina Venkata Rayudu
Posina Venkata Rayudu is on page 151 of 383
If S, d, c is a given bipointed object in a category, then for each object X of the category, the graph of 'X fields' on S is a reflexive graph, and for each morphism f: X –> Y, the induced maps on sets constitute a morphism of reflexive graphs.
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Dec 26, 2014 03:38AM
Conceptual Mathematics: A First Introduction to Categories


Posina Venkata Rayudu
Posina Venkata Rayudu is on page 358 of 383
If x is connected to y and y is connected to z, then x is connected to z.

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Mar 17, 2014 11:22PM
Conceptual Mathematics: A First Introduction to Categories


Posina Venkata Rayudu
Posina Venkata Rayudu is on page 372 of 383
On forgetting and imagining

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Dec 25, 2013 01:20AM
Conceptual Mathematics: A First Introduction to Categories


Posina Venkata Rayudu
Posina Venkata Rayudu is on page 70 of 383
Conscious Experience is / is not determined by Neural Coding

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Jul 18, 2013 11:02PM
Conceptual Mathematics: A First Introduction to Categories


Posina Venkata Rayudu
Posina Venkata Rayudu is on page 358 of 383
The Connected Components Functor
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Feb 07, 2013 12:13AM
Conceptual Mathematics: A First Introduction to Categories


Posina Venkata Rayudu
Posina Venkata Rayudu is on page 275 of 383
If you look at the distributive law

A x (B + C) = (A x B) + (A x C)

and see rectangles, what, then, is wrong with looking at

A + (B x C) = (A + B) x (A + C)

and asking for a corresponding image–may be not rectangles flashing area, may be one of those impossible visions (of climbing Penrose staircase)...

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Dec 07, 2012 05:17AM
Conceptual Mathematics: A First Introduction to Categories


Posina Venkata Rayudu
Posina Venkata Rayudu is on page 83 of 383
An ancient principle of mathematics holds that a figure is the locus of a varying element. The varying element, as a single thing, is a single figure or element itself.
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Nov 14, 2012 06:47AM
Conceptual Mathematics: A First Introduction to Categories


Posina Venkata Rayudu
Posina Venkata Rayudu is on page 303 of 383
How Russell made paradox out of Cantor's theorem?
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Oct 21, 2012 10:41PM
Conceptual Mathematics: A First Introduction to Categories


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