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#mathematics

104 posts83 participants7 posts today
Public
Fractal Kitty

I have posted the 238th Carnival of Mathematics!

fractalkitty.com/238th-carniva

If I missed something please let me know.

There is an extremely slow bit of javascript for untouchable numbers that hopefully won't make the post untouchable.

Thank you @aperiodical for organizing this.

This month we have posts from @mjd Peter Cameron, @two_star, @j2kun, Brian Clegg, @fortnow @KarenCampe, Amédée d'Aboville, Ed Vogel, @standupmaths

There was also an amazing amount of math and art being shared on blueSky with @Ayliean 's math art March prompts

what appears to be a grey circle made of circles, but is created from a K238 graph where there are 238 dots around a circle that connect to every other dot.
#carnivalOfMathematics#indieweb#blogCarnival
Public
paigerduty

last night I went on a wiki walk starting with Donald Knuth's impressive body of work and the title of his novelette "Surreal Numbers" piqued my interest

this led me down a delightfully confusing but fascinating peek into the weird side of math ft. The Monster, Baby Monster, magic squares and phrases that cracked me up like "weakly inaccessible cardinal"

def gave me a new perspective on cardinality which I mostly deal with in the practical sense with system telemetry 😅

#math#mathematics
Public
Dani Laura (they/she/he)

These two art pieces are based on the deformation of a hexagonal tiling into a topologically equivalent "tiling" composed of parts of concentric circles, all parts having the same area (third image). Selecting one hexagon as the center, we transform it into a circle of radius 1. Next concentric circle will hold the 6 adjacent tiles as sectors of rings. And so on, the circle of level n will have radius sqrt(1+3·n·(n+1)) (difference of radius when n tends to infinity approaches sqrt(3)). This map can be coloured with three colours, like the hexagonal tiling. For the artwork, suppose each sector of ring is in fact a sector of a circle hidden by inner pieces. Then choose a colour and delete all pieces not of this colour. Two distinct set of sectors can be produced, one choosing the central colour, one choosing another colour. Finally recolour the pieces according to its size.
#MathArt #Art #Mathematics #geometry #tiling

Artwork in yellows, oranges and reds, like an explosion.
Artwork in multiple colours, radial 3-symmetry.
Deformation of a hexagonal tesselation into concentric circles.
Public
Jon Awbrey

C.S. Peirce • Logic of Number (MS 229)
• inquiryintoinquiry.com/2012/09

❝All other sciences without exception depend upon the principles of mathematics; and mathematics borrows nothing from them but hints.❞

— C.S. Peirce

#Peirce #Inquiry #Mathematics #Science
#FoundationsOfMathematics #Pragmatism

Inquiry Into Inquiry · C.S. Peirce • Logic of Number (MS 229)
More from Inquiry Into Inquiry
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Rosy Maths

So I have just read a paper with this rather terrifying statement.
"Second, the math that children know when they enter kindergarten is the best predictor of graduating high school [10,11], and number and arithmetic knowledge at age 7 years predicts socioeconomic status at age 42 (even controlling for all other variables) [12]." (mdpi.com/2227-7102/13/8/839)

Given how little most adults know about "talking math" to preschoolers and toddlers, this is worrying. Also, why aren't we affecting mathematics aquisition in schools more than this? I have been thinking for a while that I want to be a Mathematics Learning Specialist - from birth up to but not including tertiary education. 1/n
#mathematics

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⚯ Michel de Cryptadamus ⚯

This is incredible. The White House sent out the Deputy Press Secretary Kush Desai to protest that the equation for tariffs on a country was definitely *not* just calculated as just (trade_deficit / imports) but instead calculated as [insert greek letter arithmetic that looks complicated].

What #KushDesai did not realize is that the values chosen for the greek letters in the equation he cited in the paper he cited it from make the formula reduce to…

trade_deficit / imports

"It's essentially #CriticalTradeTheory. Any trade imbalance between two countries is de facto evidence of systemic unfair trade practices."

x.com/KushDesai47/status/19076

Screenshot of Kush Desai Tweet
QFFICE of the UNITED STATES TRADE REPRESENTATIVE Parameter Selection To calculate reciprocal tariffs, import and export data from the U.S. Census Bureau for 2024. Parameter values for ε and ϕ were selected. The price elasticity of import demand ε was set at 4 Recent evidence suggests the elasticity is near 2 in the long run (Boehm et al., 2023), but estimates of the elasticity vary. To be conservative, studies that find higher elasticities near 3-4 (e.g., Broda and Weinstein 2006; Simonovska and Waugh 2014; Soderbery 2018) were drawn on. The elasticity of import prices with respect to tariffs, ϕ, is set to 0.25 The recent experience with U.S. tariffs on China has demonstrated that tariff passthrough to retail prices was low (Cavallo et al, 2021).
#Tariffs#MAGA#Trump
Continued thread
Public
eclectech

As I appear to be doing a Glasgow mini-thread, have I mentioned before how much I love the Mathematics and Statistics building at the University of Glasgow?

Because I love the Mathematics and Statistics building at the University of Glasgow.

Photo of the building. It is a big black box with regular windows, and could easily be awful, but the walls are covered with mathematical and statistical symbols, like chalk on a blackboard.
Closer up photo of the building showing more of the mathematical and statistical symbol, and the word MATHEMATICS across the top.
#Scotland#mathematics#Glasgow
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