Ciro Santilli @cirosantilli 37

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Euclid's postulates by

Ciro Santilli 37  Updated 2025-07-01  +Created 1970-01-01

Postulates are what we now call axioms.

There are 5: en.wikipedia.org/w/index.php?title=Euclidean_geometry&oldid=1036511366#Axioms, the parallel postulate being the most controversial/interesting.

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Reverse image search by

Ciro Santilli 37  Updated 2025-07-01  +Created 1970-01-01

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Software documentation by

Ciro Santilli 37  Updated 2025-07-01  +Created 1970-01-01

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Systems programming by

Ciro Santilli 37  Updated 2025-07-01  +Created 1970-01-01

Ciro Santilli's definition: softwareengineering.stackexchange.com/questions/151610/what-exactly-is-system-programming/399625#399625

Ciro's tutorial: Linux Kernel Module Cheat.

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Software bibliography by

Ciro Santilli 37  Updated 2025-07-01  +Created 1970-01-01

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List of social media by

Ciro Santilli 37  Updated 2025-07-01  +Created 1970-01-01

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Loop (topology) by

Ciro Santilli 37  Updated 2025-07-01  +Created 1970-01-01

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Ciro Santilli 37  Updated 2025-07-01  +Created 1970-01-01

This section is about the male/female trait.

For the act, see: sex.

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Sexual arousal by

Ciro Santilli 37  Updated 2025-07-01  +Created 1970-01-01

Analects translation by Robert Eno (2015) 16.7:

The Junzi has three cautions.
When he is young and his blood and energy are not yet settled, he is cautious about sex.
When he is in his prime and his blood and energy have newly achieved strength, he is cautious about combativeness.
When he is old and his blood and energy are declining, he is cautious about acquisitiveness.

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Ciro Santilli 37  Updated 2025-07-01  +Created 1970-01-01

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Ciro Santilli 37  Updated 2025-07-01  +Created 1970-01-01

azeria-labs.com/the-importance-of-deep-work-the-30-hour-method-for-learning-a-new-skill/

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99 Bottles of Beer by

Ciro Santilli 37  Updated 2025-07-01  +Created 1970-01-01

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Ciro Santilli 37  Updated 2025-07-01  +Created 1970-01-01

A young Ciro Santilli really liked this game, the way it makes you feel.

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Portuguese (language) by

Ciro Santilli 37  Updated 2025-07-01  +Created 1970-01-01

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Personal life of Richard Feynman by

Ciro Santilli 37  Updated 2025-07-01  +Created 1970-01-01

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Ciro Santilli 37  Updated 2025-07-01  +Created 1970-01-01

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Irreducible representation by

Ciro Santilli 37  Updated 2025-07-01  +Created 1970-01-01

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Ciro Santilli 37  Updated 2025-07-01  +Created 1970-01-01

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The real projective plane is not simply connected by

Ciro Santilli 37  Updated 2025-07-01  +Created 1970-01-01

To see that the real projective plane is not simply connected space, considering the lines through origin model of the real projective plane, take a loop that starts at

(1, 0, 0)

and moves along the

y = 0

great circle ends at

(- 1, 0, 0)

.

Note that both of those points are the same, so we have a loop.

Now try to shrink it to a point.

There's just no way!

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Ciro Santilli 37  Updated 2025-07-01  +Created 1970-01-01

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