faelif

@faelif@mastodon.social

Profile image alt text: Artwork of a witch. She is wearing all purple, including a purple crooked pointy hat with a large black bow on it. She has black straight hair and purple eyes, and around her neck is a black choker with a purple star-shaped gem hanging from the middle.

Bookwyrm account: https://bookwyrm.social/user/faelif

This profile is from a federated server and may be incomplete. Browse more on the original instance.

ColinTheMathmo, to random
@ColinTheMathmo@mathstodon.xyz avatar

From Tom Bowler on TBBBS:

"Someone else posted this yesterday and it's great fun! Sharing with FM class today. How will you do in 20 minutes?"

It's the MIT Integration Bee Qualifying Test.

https://twitter.com/Ridermeister/status/1783418201247752622

faelif,

@RobertJackson58585858 @christianp @ColinTheMathmo

Not so! It may have Q20, but not Q21

Minimus, to random
@Minimus@archaeo.social avatar

Minima filiolo pulvinum acu litteratum consuit (Minimus has sewed a monogrammed cushion for her little son). Silvius temptat quoque panniculum suere, scilicet cum filo rubro (Silvius is trying to sew a little scrap of cloth, with red thread of course)!

faelif,

@Minimus

Hold on - no more fabula murina? Or just not labelled in this toot?

sjvn, to random
@sjvn@mastodon.social avatar

Lisp enters the room.

faelif,

@sjvn

This is actually a British English/American English thing - in BrE we call these brackets, square brackets and curly brackets respectively, with parentheses being any punctuation used to surround a parenthetical remark (most commonly brackets, dashes or commas)

sundogplanets, to random
@sundogplanets@mastodon.social avatar

It is too cold for anything to function. Can we just stop trying?

This morning, while frantically trying to make it to a vet appointment with a borrowed horse trailer, I learned that zip ties do not function below -30C. I also learned that air compressor hoses become very brittle and actually snap in half below -30C.

And when I got back home, I (re-)learned that slowly dripping water faucets lead to frozen drainpipes.

I am ready to haul water+wood, go nowhere, and live in a yurt again.

faelif,

@sundogplanets

The deicer needed to get through the doors in the first place

AkaSci, (edited ) to random
@AkaSci@fosstodon.org avatar

New image of Uranus taken by the JWST shows its north polar cap, its exquisite rings and 14 of its moons.

The image was taken by the NIRCam camera on Sep 4, 2023 at IR wavelengths 1.4, 2.1, 3.0 and 4.6 µm. This 566x409 image is part of a larger field-of-view image.

Uranus' axis is tilted by 98°. With an orbital period of 84 years, each pole faces the Sun (and Earth) for 42 years! During the years around the solstices, we can see its rings almost face on.

https://www.nasa.gov/missions/webb/nasas-webb-rings-in-holidays-with-ringed-planet-uranus/
1/n

faelif,

@AkaSci

Miranda, Ariel -> The Tempest
Titania, Oberon -> Midsummer Night's Dream

Bianca, Desdemona -> Othello
Cressida -> Troilus and Cressida
Juliet, Rosalind -> Romeo and Juliet
Puck -> Midsummer

All the final nine from the Tempest I believe

johncarlosbaez, to random
@johncarlosbaez@mathstodon.xyz avatar

A 'derangement' is a permutation of a set where no element gets mapped to itself. There are 24 permutations of the set {A,B,C,D}, but only 9 derangements - shown in blue below.

Today I'll explain how to count derangements!

My talk will be at 3 pm UK time, November 23rd. I'm giving it in room 6206 in the James Clerk Maxwell Building of the University of Edinburgh. You can also join us on Zoom:

https://ed-ac-uk.zoom.us/j/82270325098
Meeting ID: 822 7032 5098
Passcode: Yoneda36

This is my second to last talk in this series.

faelif,

@johncarlosbaez

Is this available as a recording somewhere?

ColinTheMathmo, (edited ) to random
@ColinTheMathmo@mathstodon.xyz avatar

A question for teachers, but I'd welcome thoughts from others.

In teaching, should one talk about a quadratic equation such as x^2+10x+25=0 as having one solution or a repeated solution, and do you think it matters?

If you're at all interested, or think some of your followers might be, then I'd be delighted if you would boost this for reach ... thank you.

faelif,

@ColinTheMathmo

Student here, my teacher's been using "one repeated root".

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