shiz
@shirazkn.bsky.social
simple guy, likes math and music
see www.shiraz-k.com
see www.shiraz-k.com
Thoroughly enjoying this article by John Baez and his friend that gives control theory a categorical treatment arxiv.org/abs/1405.6881
Categories in Control
Control theory uses "signal-flow diagrams" to describe processes where real-valued functions of time are added, multiplied by scalars, differentiated and integrated, duplicated and deleted. These diag...
arxiv.org
January 26, 2026 at 5:06 AM
Thoroughly enjoying this article by John Baez and his friend that gives control theory a categorical treatment arxiv.org/abs/1405.6881
January 24, 2026 at 11:30 PM
@skatestory.com is sooo fire I feel like I did the first time I played need for speed or burnout as a kid 🥹
December 23, 2025 at 2:31 AM
@skatestory.com is sooo fire I feel like I did the first time I played need for speed or burnout as a kid 🥹
Outlook for mac comes configured with a default "Get Outlook for Mac" signature.. I want 30 minutes in a room alone with whoever thought that that was a good idea
November 30, 2025 at 2:03 AM
Outlook for mac comes configured with a default "Get Outlook for Mac" signature.. I want 30 minutes in a room alone with whoever thought that that was a good idea
Reposted by shiz
ahah IT WORKS look it's a C² dual quaternion B-spline!!
this is interpolating *poses* in dual quaternion form, coupling position and rotation, instead of treating them independently (this is a really neat thing!!)
this is interpolating *poses* in dual quaternion form, coupling position and rotation, instead of treating them independently (this is a really neat thing!!)
November 26, 2025 at 3:10 AM
ahah IT WORKS look it's a C² dual quaternion B-spline!!
this is interpolating *poses* in dual quaternion form, coupling position and rotation, instead of treating them independently (this is a really neat thing!!)
this is interpolating *poses* in dual quaternion form, coupling position and rotation, instead of treating them independently (this is a really neat thing!!)
Reposted by shiz
It’s widely known (and, I think, pretty uncontroversial) that learning requires effort — specifically, if you don’t have to work at getting the knowledge, it won’t stick.
Even if an LLM could be trusted to give you correct information 100% of the time, it would be an inferior method of learning it.
Even if an LLM could be trusted to give you correct information 100% of the time, it would be an inferior method of learning it.
Relying on ChatGPT to teach you about a topic leaves you with shallower knowledge than Googling and reading about it, according to new research that compared what more than 10,000 people knew after using one method or the other.
Shared by @gizmodo.com: buff.ly/yAAHtHq
Shared by @gizmodo.com: buff.ly/yAAHtHq
November 21, 2025 at 12:49 PM
It’s widely known (and, I think, pretty uncontroversial) that learning requires effort — specifically, if you don’t have to work at getting the knowledge, it won’t stick.
Even if an LLM could be trusted to give you correct information 100% of the time, it would be an inferior method of learning it.
Even if an LLM could be trusted to give you correct information 100% of the time, it would be an inferior method of learning it.
This blog post connects the "monogram notation" introduced by @russtedrake.bsky.social and widely used in #robotics and #graphics with concepts from Lie groups (e.g., left-/right-invariant velocities)
shiraz-k.com/posts/roboti...
shiraz-k.com/posts/roboti...
Representing Spatial Velocities
I’ve been going through Russ Tedrake’s notes on robotics, which got me thinking about their so-called monogram notation. The result of this deliberation was a new notation for spatial velocities that ...
shiraz-k.com
November 21, 2025 at 2:21 PM
This blog post connects the "monogram notation" introduced by @russtedrake.bsky.social and widely used in #robotics and #graphics with concepts from Lie groups (e.g., left-/right-invariant velocities)
shiraz-k.com/posts/roboti...
shiraz-k.com/posts/roboti...
Reposted by shiz
~ November 21 ~
2019: The Cybertruck is launched.
2019: The Cybertruck is launched.
November 21, 2025 at 1:46 PM
~ November 21 ~
2019: The Cybertruck is launched.
2019: The Cybertruck is launched.
When you try to place the flat torus in R^3, call that an embed fail
November 16, 2025 at 2:01 AM
When you try to place the flat torus in R^3, call that an embed fail
Reposted by shiz
Bear to Take Huge Dump in Forest
November 15, 2025 at 5:01 AM
Bear to Take Huge Dump in Forest
Started a new blog post on Principal Bundles at www.shiraz-k.com! It's a long way away, but I'm excited about how this illustration turned out:
#MathSky
#MathSky
November 2, 2025 at 8:32 PM
Started a new blog post on Principal Bundles at www.shiraz-k.com! It's a long way away, but I'm excited about how this illustration turned out:
#MathSky
#MathSky
Reposted by shiz
Relying on LLMs when we have specialized tools for tasks... it's so lazy! The best AI applications are specialized models (eg drug discovery machine learning, handwriting recognition vision models for sorting the mail) used for specific tasks. LLMs are not generalists!
Language models are terrible at counting (part 12381...)
It's concerning how many workflows/copilots etc. these tools are now creeping into, despite making small numerical errors all over the place (which a causal eye might not catch).
Below from GPT-5 and Sonnet-4.5:
It's concerning how many workflows/copilots etc. these tools are now creeping into, despite making small numerical errors all over the place (which a causal eye might not catch).
Below from GPT-5 and Sonnet-4.5:
October 29, 2025 at 11:32 AM
Relying on LLMs when we have specialized tools for tasks... it's so lazy! The best AI applications are specialized models (eg drug discovery machine learning, handwriting recognition vision models for sorting the mail) used for specific tasks. LLMs are not generalists!
Reposted by shiz
Python was awarded a funding grant, funding grant asked Python foundation to remove all diversity and inclusion initiatives they have.
Python foundation said no and rejected the grant.
If you use Python, send a few dollars to the charity to keep it going. I’m pushing a dono on behalf of ScamGuard.
Python foundation said no and rejected the grant.
If you use Python, send a few dollars to the charity to keep it going. I’m pushing a dono on behalf of ScamGuard.
Please read our statement, share it with your networks, and support us if you can. www.python.org/sponsors/app... psfmember.org/civicrm/cont...
October 27, 2025 at 4:11 PM
Python was awarded a funding grant, funding grant asked Python foundation to remove all diversity and inclusion initiatives they have.
Python foundation said no and rejected the grant.
If you use Python, send a few dollars to the charity to keep it going. I’m pushing a dono on behalf of ScamGuard.
Python foundation said no and rejected the grant.
If you use Python, send a few dollars to the charity to keep it going. I’m pushing a dono on behalf of ScamGuard.
Reposted by shiz
My version of this - I called it Dirac's Belt Swimming in Dirac's Sea :) Inspired by Roger Penrose's book The Road to Reality.
Watercolor and acrylics #SciArt #MathArt #PhysicsArt
Math brackground (plus early sketch of this) in this blog post of mine: elkement.art/2021/02/15/d...
Watercolor and acrylics #SciArt #MathArt #PhysicsArt
Math brackground (plus early sketch of this) in this blog post of mine: elkement.art/2021/02/15/d...
October 27, 2025 at 2:47 PM
My version of this - I called it Dirac's Belt Swimming in Dirac's Sea :) Inspired by Roger Penrose's book The Road to Reality.
Watercolor and acrylics #SciArt #MathArt #PhysicsArt
Math brackground (plus early sketch of this) in this blog post of mine: elkement.art/2021/02/15/d...
Watercolor and acrylics #SciArt #MathArt #PhysicsArt
Math brackground (plus early sketch of this) in this blog post of mine: elkement.art/2021/02/15/d...
Reposted by shiz
Did a presentation at Brown University demoing Blacksky and this was the top post on the trending feed.
I just know y’all are not lusting after KAMALA HARRIS on my skyline!!!!
October 25, 2025 at 7:26 PM
Did a presentation at Brown University demoing Blacksky and this was the top post on the trending feed.
#mathsky tip, if you're on MacOS consider getting Alfred (blazing fast drop-in replacement for Spotlight without AI bullshit) and set it up so that "w " directly pulls up the Wikipedia page!
Only downside is that you seem to have to spell the page exactly right. @alfredapp.bsky.social?
Only downside is that you seem to have to spell the page exactly right. @alfredapp.bsky.social?
October 25, 2025 at 1:12 AM
#mathsky tip, if you're on MacOS consider getting Alfred (blazing fast drop-in replacement for Spotlight without AI bullshit) and set it up so that "w " directly pulls up the Wikipedia page!
Only downside is that you seem to have to spell the page exactly right. @alfredapp.bsky.social?
Only downside is that you seem to have to spell the page exactly right. @alfredapp.bsky.social?
"Misuse as a Use of Language" from Jan 2023. Having fun reading my own writing, because back then I had soo much motivation to introduce the uninitiated reader to 20th century mathematics. This post leads into Gödel's incompleteness theorems..
shiraz-k.com/posts/langua...
shiraz-k.com/posts/langua...
Misuse as a Use of Language
This is my first post! It discusses the question of whether spoken and written languages like English could be ’logical’ by design. I will break this post up into two parts. The first one does not req...
shiraz-k.com
October 24, 2025 at 12:58 AM
"Misuse as a Use of Language" from Jan 2023. Having fun reading my own writing, because back then I had soo much motivation to introduce the uninitiated reader to 20th century mathematics. This post leads into Gödel's incompleteness theorems..
shiraz-k.com/posts/langua...
shiraz-k.com/posts/langua...
Reposted by shiz
‘96% of healthcare professionals said the model helps to reduce children’s anxiety, and 46% reported a lesser need to use sedation after the children played with the set.‘
‘Lego doesn’t sell the sets and instead has donated more than 10,000 of the kits to hospitals around the world.’
‘Lego doesn’t sell the sets and instead has donated more than 10,000 of the kits to hospitals around the world.’
How Lego MRI scanner sets are reducing anxiety in children undergoing medical treatment www.cnbc.com/2025/10/13/l...
How Lego MRI scanner sets are reducing anxiety in children undergoing medical treatment
Lego's MRI scanner play sets, which launched in 2023, are significantly reducing anxiety and the use of sedation in children, according to new research.
www.cnbc.com
October 14, 2025 at 7:12 AM
‘96% of healthcare professionals said the model helps to reduce children’s anxiety, and 46% reported a lesser need to use sedation after the children played with the set.‘
‘Lego doesn’t sell the sets and instead has donated more than 10,000 of the kits to hospitals around the world.’
‘Lego doesn’t sell the sets and instead has donated more than 10,000 of the kits to hospitals around the world.’
Spent a lot of time today playing around with @diffgeom.com's incredible math visualizations www.diffgeom.org/software/ind...
My favorite was the Torus Sketch! Makes me wanna learn Javascript
My favorite was the Torus Sketch! Makes me wanna learn Javascript
Andrew D. Hwang: Interactive Math Software
www.diffgeom.org
October 14, 2025 at 3:24 AM
Spent a lot of time today playing around with @diffgeom.com's incredible math visualizations www.diffgeom.org/software/ind...
My favorite was the Torus Sketch! Makes me wanna learn Javascript
My favorite was the Torus Sketch! Makes me wanna learn Javascript
They call it a window because it keeps the wind owt
October 13, 2025 at 7:55 PM
They call it a window because it keeps the wind owt
@skatestory.com is just incredible on all counts. Dude has been developing it for as long as EA has been developing their silly fortnite reskin
October 13, 2025 at 2:25 AM
@skatestory.com is just incredible on all counts. Dude has been developing it for as long as EA has been developing their silly fortnite reskin
October 10, 2025 at 1:51 AM
Reposted by shiz
New blog post! Through a sequence of images, I verify that the unknotting number of the connected sum of a (2,7) torus knot and its mirror is less than 6: I show that this first image is the connected sum, and after changing those crossings, it produces the unknot! divisbyzero.com/2025/10/08/t...
October 9, 2025 at 3:00 AM
New blog post! Through a sequence of images, I verify that the unknotting number of the connected sum of a (2,7) torus knot and its mirror is less than 6: I show that this first image is the connected sum, and after changing those crossings, it produces the unknot! divisbyzero.com/2025/10/08/t...
Reposted by shiz
I love math
October 8, 2025 at 6:31 PM
I love math
Reposted by shiz
