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minimally edge-coloured cas

@casolotl.northsky.social
176 followers 398 following 469 posts

(Complex/Differential) Geometer/Physicist | she/they

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minimally edge-coloured cas @casolotl.northsky.social · 1h
How your email finds me
Source: https://www.tumblr.com/importantcatpics/814445184753467392

A tortoiseshell cat on a bed with a plush dog. It is wrapped in blankets and has a duvet and some pillows on top of it. The cat looks content
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minimally edge-coloured cas @casolotl.northsky.social · 22h
It might seem strange for a head of state to acknowledge a CVE, but one must remember that Japan is a PHP instance with a vestigial government attached
Sanae Takaichi, PM of Japan on X

We have an urgent request for everyone to take action tonight.

Regarding PHP, which is used on many websites, the PHP security team has issued a warning about two critical vulnerabilities.

Please check if your publicly available websites use PHP, and prepare to apply the fix patch that will be released tonight at 11 PM on October 21 (Japan time) as soon as possible.

If it is difficult to apply the fix patch promptly, temporarily suspending websites and similar measures can be considered an effective way to reduce risk.

Related information is also being posted on the X account of the National Center of Incident Readiness and Strategy for Cybersecurity, so please refer to that as well.
National Center of Incident Readiness and Strategy for Cybersecurity (Notice and Alert Information) (@cyber_forecast
) / X
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minimally edge-coloured cas @casolotl.northsky.social · 18/10/2026
It's (slightly less than 100) of these
A plastic A4 sleeve
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minimally edge-coloured cas @casolotl.northsky.social · 18/10/2026
Called a friend and talked about a combinatorics puzzle/conjecture! Though I think I might have to computer search for "small" counterexamples ._.
Me in the mirror.

I have long black hair and glasses, and I'm wearing a GDQ shirt that says "trans rights" along with some navy pajama pants
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minimally edge-coloured cas @casolotl.northsky.social · 16/10/2026
I know I'm mathbrained but I didn't realise I was this mathbrained
Top 50 most distinctive words in my account.

Top 5 are "rk", "deg", "corrections", "korra", and "gauge"
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minimally edge-coloured cas @casolotl.northsky.social · 12/10/2026
Hell yeah! Fuck yeah! Congrats nnor! 🎉
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minimally edge-coloured cas @casolotl.northsky.social · 12/10/2026
Brought these two back from the office :3
A small plush hamster (Baja from Baja no Studio) wearing a ribbon with the trans pride flag colours as a scarf.

To his right is a small articulated cat keychain mascot in the colours of the ace pride flag on top of a clock
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minimally edge-coloured cas @casolotl.northsky.social · 10/10/2026
Very cute visualisation I found on Tumblr www.tumblr.com/kneadingmath...
Alt text from IMG source

An illustration of the notion of "security cylinders", followed by a short text description of it. The illustration shows a glass cylinder englobing a curve, with three cats inspecting it, and safety barriers. The text introduces the notion of vector field, differential equation and solution, before introducing the notion of security cylinder. A security cylinder is the product of a time interval and a ball in space, chosen so that any solution passing through its center can only leave the cylinder by running out of time, not out of space.
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minimally edge-coloured cas @casolotl.northsky.social · 05/10/2026
What ppl say to me when I bring up the fact my rights are being systematically eroded
A piece of text from the appendix of: https://www.kurims.kyoto-u.ac.jp/~motizuki/Topics%20in%20Absolute%20Anabelian%20Geometry%20I.pdf

The words "[k-]trans-homo" are highlighted
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minimally edge-coloured cas @casolotl.northsky.social · 05/10/2026
Was saving a draft and found this
Draft post which is 1mo old

"I was raised in an era"
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minimally edge-coloured cas @casolotl.northsky.social · 05/10/2026
One of the first episodes of DW I watched. I had nightmares for days afterwards
Child wearing a WWII era gas mask from the doctor who episode "The Empty Child"
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minimally edge-coloured cas @casolotl.northsky.social · 04/10/2026
Finished my corrections this week! It's also starting to get colder here but at least I'm prepared :3
Me wearing a grey knit tunic sweater and tights.

I am   W A R M
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minimally edge-coloured cas @casolotl.northsky.social · 27/09/2026
Was idly curious about how much a CD copy of Mikgazer might set me back and yeeeeee…
ebay listing for a mint condition copy of the Mikgazer CD

it costs a little over over £1k (around 1300 USD at time of writing)
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minimally edge-coloured cas @casolotl.northsky.social · 27/09/2026
Week was meh at best, but the coming one should be better
me holding a mug in front of my face as I'm sat at my PC

the mathcoffeeselfie thread is open on my monitor behind me
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minimally edge-coloured cas @casolotl.northsky.social · 13/09/2026
Climbed a few hills today and I'm very very eepy
Me leaning on a trig point at the top of a hill
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minimally edge-coloured cas @casolotl.northsky.social · 06/09/2026
feeling a bit ill so just staying at home and doing some corrections (mug of vitamin C off screen)
me, I have long black hair, and I'm wearing a navy knit cardy and a long floral print skirt
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minimally edge-coloured cas @casolotl.northsky.social · 30/08/2026
Would've liked to go for a hike today but it's kinda wet and miserable :( Nestled in a pub with a book instead
Me. I'm wearing black corduroy trousers and a t-shirt with a sun on it. I've got a check long sleeve shirt on tooThe left hand of darkness and a pint
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minimally edge-coloured cas @casolotl.northsky.social · 27/08/2026
23, not a great look... Surprised at the omission of Crywank though
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minimally edge-coloured cas @casolotl.northsky.social · 24/08/2026
God it feels good to bring this back after literal decades
xzibit yo dawg meme

> Yo dawg I heard you like web browsers

> So we put a browser in your browser, so you can surf while you surf

Made on firefox inside chromium
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minimally edge-coloured cas @casolotl.northsky.social · 22/08/2026
Circular from Hebden bridge via Heptonstall and Hardcastle Crags
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minimally edge-coloured cas @casolotl.northsky.social · 18/08/2026
Without downloading any new pics, where are you at mentally?
A smiling girl puts her foot on the spokes of a rake.

She pushes her foot down, and the rake swings up to hit her in the forehead. She is still smiling
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minimally edge-coloured cas @casolotl.northsky.social · 16/08/2026
Went to Gordale scar and Malham cove today
Gordale scar, a gully cut from limestone in the Yorkshire dales national parkthe top of Malham cove, a massive limestone pavement, looking south
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minimally edge-coloured cas @casolotl.northsky.social · 14/08/2026
Trying out a bandana It's difficult to get a photo of it from different angles tho, so I think I have to just trust it looks fine
A picture of me wearing a bandana, a white top, and flares. A lanyard with the colours of the ace pride flag hangs from my belt loop and pocketMe again but I'm facing forward now
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minimally edge-coloured cas @casolotl.northsky.social · 13/08/2026
Some photos from today's eclipse!
Taken around 18:30BST, the shadow of the moon is clearly visible but the sun is still a recognisable dotTaken around 1845BST, the sun is now a noticeable crescent1900BST, the sun is almost totally obscured by the moon's shadow Around 1915, the shadow of the moon is moving away again
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minimally edge-coloured cas @casolotl.northsky.social · 12/08/2026
An image of Plato deducing all mathematical knowledge
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minimally edge-coloured cas @casolotl.northsky.social · 02/08/2026
Some photos from around Edinburgh
Some asters between the crags on the Granton breakwater.

Possibly scentless mayweed but I can't be sure."High Sky" by Bridget Riley at Modern One, EdinburghA very stylish doorway somewhere near HaymarketMe walking between some pews looking up at some stained glass in St Mary's episcopal cathedral. The coloured light from the windows spills onto the pews and floor behind me
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minimally edge-coloured cas @casolotl.northsky.social · 31/07/2026
Congrats! 🎉
A panel from akanebanashi where akane and another zenza are celebrating
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minimally edge-coloured cas @casolotl.northsky.social · 30/07/2026
One thing I do miss about London when I'm back home are the hundreds of small parks and gardens
Victoria Embankment gardens

A green patch of grass is broken up by asphalt paths. In the middle distance are banana plants and some brightly coloured flowers. People are milling about.

There are many trees with deep green leaves in the background
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minimally edge-coloured cas @casolotl.northsky.social · 23/07/2026
Didn't mention it at the time but I finished this a week ago or so, and it is definitely something I am going to have to reread soon
Our wives under the sea by Julia Armfield
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minimally edge-coloured cas @casolotl.northsky.social · 20/07/2026
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minimally edge-coloured cas @casolotl.northsky.social · 14/07/2026
Got something nice :3
Me in a salwar kameez

It is royal blue and embroidered with various patterns and sequins, I am wearing a dupatta around my neck with the same colours. The embroidery gets more heavy towards the hems and ends of the sleeves.

I have long black wavy hair
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minimally edge-coloured cas @casolotl.northsky.social · 12/07/2026
Went on a hike in Brontë country today!
View from Top Withins

Open moorland with some greenery against a blue sky with some wispy clouds

There are foxgloves in the foreground and the silhouette of some thistlesSome blue hydrangeas in Haworth
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minimally edge-coloured cas @casolotl.northsky.social · 22/06/2026
NGL, it'd be fun to do a waltz on this
Mumford's drawing of Spec Z[X] from the red book

It has some generic points meaning it is T_0/Kolmogorov but not T_2/Hausdorff
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minimally edge-coloured cas @casolotl.northsky.social · 17/06/2026
And lab scale solitons are definitely real physical things (viz. Ginzburg-Landau vortices) but this is classical behaviour
Several small black dots populate a thin superconductor. They are tens of micrometers across

Images of vortices in 200 nm thick YBCO film taken by Scanning SQUID Microscopy after field cooling at 6.93 μT to 4 K.

CC Frederick S. Wells, Alexey V. Pan, X. Renshaw Wang, Sergey A. Fedoseev & Hans Hilgenkamp
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minimally edge-coloured cas @casolotl.northsky.social · 15/06/2026
The skirt in question
A red skirt with a print of various brightly coloured flowers on it
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minimally edge-coloured cas @casolotl.northsky.social · 14/06/2026
Waiting for a friend. Capping off a two week break of doing basically nothing
A beer (kirkstall virtuous) on a table in a beer garden. There are trees in various stages of leaf above and the sky is a pale blue turning into peach in places

A concrete building is visible in the background
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minimally edge-coloured cas @casolotl.northsky.social · 12/06/2026
www.tumblr.com/kyssimmee/75...
Art by @kyssimmee on Tumblr

Starlight Glimmer standing upright on her hind-limbs and saying "Oh well! I don't have control over that, so I'm gonna stop dwelling on it!"

She has a painfully forced smile
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minimally edge-coloured cas @casolotl.northsky.social · 10/06/2026
further simplification of the previous diagram, the rightmost part of the blue component is now just a single crossinguncrossing the two long horizontal strands of the purple componenta hopf link
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minimally edge-coloured cas @casolotl.northsky.social · 10/06/2026
Verified it myself but yeah, I think this is a Hopf link. Colours switch blue → purple, and green → yellow each image
trace of the photolink diagram simplifying some of the crossings in the previous tracefurther simplification of the previous link diagram, the green component is now clearly the unknotfurther simplification of the previous diagram
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minimally edge-coloured cas @casolotl.northsky.social · 10/05/2026
Treated myself to a slice of baklava today ^^
A slice of baklava dusted with pistachios with a small pot of soft serve behind it. To its left is a latte
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minimally edge-coloured cas @casolotl.northsky.social · 03/05/2026
I spent most of the daylight hours during the past couple days feeling wretched, so at the office writing to make up for those. The cup recently contained a nice and floral black tea, so at least there's that.
an empty mug being held in front of a computer monitor

the monitor is displaying two pages of my thesis
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