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[[Soaring_with_Category_Theory?]] comment by "Aloizio Macedo" -- this is what makes me want to study Category Theory -- just in case!

What point am I trying to make? The point is: the important property that categories are really abstracting is structure itself. Category theory endows a mathematician with a capability to soar through the fields of mathematics with a broad vision. More than "inheritance of properties", there is identification of a common underlying structure. The naturality of such idenfication comes with time and experience.

And all the above is an understatement. The distillation process which category theory provides is a powerful tool in several aspects. For example, it is common to have a situation where we want things to exist and they are imposed by some condition. And the imposition commands the definitions, and proofs are matter of routine checking. This is true, for example, in the isomorphism theorem. And the list goes on.

^z - 2019-03-??


... how science is about how things that seem different are really the same, and the humanities are about how things that seem the same are really different? ... Macro vs Micro ??

^z - 2019-02-??

PoemMantra Template

<div id="poemMantra">
    <img class="poemMantraImg" src="">
    <div class="title"><span>Be Open</span></div>
    <div class="poem"><span>
... just attending to the now,<br>
with no purpose,<br>
no method,<br>
nothing to attain ...
    <div class="mantra"><span>No Goals!</span></span></div>                  


Be Open
... just attending to the now,
with no purpose,
no method,
nothing to attain ...
No Goals!

none of us remembers our birthday, but we all celebrate it - from "I Am Dragon"?!


The flip-side of feeling left-out is the feeling that other people get that someone is cutting-in ...

In Love that Long...

I am here, this moment, inside the beauty,
the gift God has given,
our Love:
    this gold and circular sign
means we are free of any duty:
            out of eternity,
I turn my face to you, and into
    we have been in Love that long.

- Rumi, Coleman Barks, The Glance


"People today do not know how to rest. They fill their free time with countless diversions. People cannot tolerate even a few minutes of unoccupied time. They have to turn on the TV or pick up a newspaper, reading anything at all, even the advertisements. They constantly need something to look at, listen to, or talk about, all to keep the emptiness inside from rearing its terrifying head.

The practice of Zen is to eat, breathe, cook, carry water, and scrub the toilet – to infuse every act of body, speech, and mind – with mindfulness, to illuminate every leaf and pebble, every heap of garbage, every path that leads to our mind’s return home.

Only a person who has grasped the art of cooking, washing dishes, sweeping, and chopping wood, someone who is able to laugh at the world’s weapons of money, fame, and power, can hope to descend the mountain as a hero. A hero like that will traverse the waves of success and failure without rising or sinking. In fact, few people will recognize him (or her) as a hero at all."

~Thich Nhat Hanh

-- z 2018-10-02 11:06 UTC

Tell all the truth but tell it slant — (1263)
Tell all the truth but tell it slant —
Success in Circuit lies
Too bright for our infirm Delight
The Truth's superb surprise
As Lightning to the Children eased
With explanation kind
The Truth must dazzle gradually
Or every man be blind —

-- z 2018-10-30 09:56 UTC

mindfulness nonattachment oneness
meta soft open
awake accept thankful

-- Anonymous 2018-11-06 13:52 UTC

Halfway - between the supergalaxies and the fundamental particles - between the Hubble Time and the Planck Time - we sit, and think, and care for one another

-- z 2018-11-22 10:43 UTC


-- z 2018-11-22 10:49 UTC

Tracy Chapman ...

Don't you know
They're talkin' 'bout a revolution
It sounds like a whisper
Don't you know
They're talkin' about a revolution
It sounds like a whisper
While they're standing in the welfare lines
Crying at the doorsteps of those armies of salvation
Wasting time in the unemployment lines
Sitting around waiting for a promotion

check out and esp.

Wikipedia:Shardik - re-read and quotes?


Category theory – A gentle introduction [pdf] (

Isn't that something that Haskell programmers use to obfuscate their programs?

If you live under a rock, you might also think the sun is nothing more than just a crack in the Earth.

This is my LIFE.

There was a day that was so much fun.
There was a day something good happened.

There was a sad day, though it wasn’t about me.
Ah... and a sad day that was about me.

There was a day that was depressing.
And a day that was so boring.

That day,
this day,
that time,
this time.

Whatever the kind of day,
it was one day of my life.

That day, this day, that time, this time.
Whatever the kind of day,
it was a good day to be alive.

This is my LIFE.
I can’t trade it with anyone.
These are my days,
and they belong only to me.

This is my LIFE.
This is my BOOK.

Hobonichi Techo

There have been rumors about a dream chalk, a chalk so powerful that mathematics practically writes itself; a chalk so amazing that no incorrect proof can be written using this chalk. I can finally say, after months of pursuit, that such a chalk indeed exists.

"Analogies between Analogies" - Ulam?

-- z 2019-01-04 10:06 UTC


... On some level, every bowl of ramen ever made has been a lesson in impermanence: slurp the noodles, drink the broth, stare into the abyss of an empty bowl. But Davis Square noodle shop Tsurumen puts impermanence at the center of the ramen experience.

The restaurant opened April 12, 2018. It will operate for 1,000 days. Then it will close. Chef Masuo Onishi is intentionally engaged in the practice of Make No Plans. He doesn’t want to think about the next. He wants to think about the now. Making the best ramen. Being present. A small sign in the shop window says: “Yesterday. Now. Tomorrow.” Yesterday and tomorrow are crossed out.

“It is very important to have an end to things,” Onishi says in Japanese, through a translator. “A person’s life is limited. If someone were to be immortal, they wouldn’t pay as much attention to the moment. Setting an end to things makes you focus on what you’re doing now.” ...

-- z 2019-01-25 09:43 UTC

Many Worlds of Math

Science Friday Eugenia Cheng:

... And I feel like I can sense Bach’s excitement as he goes through the keys in these pieces. But it’s amazing. He’s never been able to write in this key before. And so I’m going to play a prelude an F sharp.


Now, F sharp is exactly halfway between C and C. That means it’s actually the square root of 2 away. So the frequency ratio is the square root of 2, which is why it’s related to the square root of 2. This interval is the least consonant interval. It’s the most dissonant. It used to be called the devil in music, because it is the one that sounds– the harmonics interfere with each other the most.

And I feel like I’m just sensing Bach’s wonder that he can actually write a piece in F sharp for the first time. And so the piece is quite simple. Some of the pieces that are in more standard keys, like C minor or G minor, are really complicated. And I feel like it’s because he’s used to writing in those keys. Whereas this one, he’s never been to before, so he just sits there and goes, this is amazing.

Just like if you go to a beautiful beach for the first time. You don’t do anything, you just stare at it and you go, this is beautiful. Then he wanders around different keys feeling how beautiful it is to be able to go in these keys he’s never been to before. And he doesn’t stay in any of them for very long. And then he comes back to F sharp. And I just feel like it’s almost childlike wonder. It’s not a complicated piece, but it’s in F sharp, which is the square root of 2. ...

-- z 2019-03-12 11:18 UTC

Noam Shpancer

[2] "Decision-Making for Sound Mental Health: 3 Useful Principles" 6 Feb 2019

flexibility over rigidity, compassion over cruelty, approach over avoidance

and [3] "Are We Being Mindless About Mindfulness?" 13 Mar 2019

-- z 2019-03-15 08:44 UTC

Feedback Fallacy

add a row to the Meditation Map and re-order and add dividers?

no if be
now may yes
meta open love
here soft kind
attention acceptance affirmation
mindfulness nonattachment oneness

... maybe vary italics/bold ... and center words in table ... and consider "know" and "also" (or "and" or "&") and "leap" (or "jump") and "yin & yang" ...

-- z 2019-03-16 09:48 UTC

instead of "be" in column 3, how about "if"?

and emoji? - 🌑 ♾ 🌕 ?

-- z 2019-03-17 10:17 UTC