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In which we meet Cayley’s Theorem and reach the end of this particular adventure, but catch a glimpse of faroff lands still to be explored. Theorem 68: Let be a group, let be a set. Given a left action of on , there is an associated homomorphism . Given a homomorphism , there is an associated […]
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“Life can only be understood backwards; but it must be lived forwards.”― Søren Kierkegaard++++Lots of students have observed that they didn't really understand a subject until they_____algebra calculus++++++++++++++We need A to prove B but we need B to understand the why of A.+++++++++++++On the first pass, jettison all of the inessentials from A
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If you read the books or watched the movies, you get the sense that Frodo and Sam walked pretty far to toss that ring in the fire. Imgur user mattsawizard…Tags: humor, Lord of the Rings
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Let be a graph. The Ramsey number is the smallest such that whenever you color the edges of the complete graph with vertices with two colors blue and red, you can either find a blue copy or a red copy of . Ramsey’s famous theorem asserts that if is a complete graph on vertices then […]
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John D. Barrow
If you are a flower then April is allegedly the cruellest month, but if you are a student of any sort then I'm sure you would have picked June.
If you are a flower then April is allegedly the cruellest month, but if you are a student of any sort then I'm sure you would have picked June. June is a month of
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If you put out an open call through email to complete a task for nothing in return, it might make sense not to expect much. I tried to make it as simple as possible to gather some reaction time data … Continue reading →
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Imagine that you are a very new MATLAB programmer and you have to create an N x N matrix called A where A(i,j) = i+j Your first attempt at a solution might look like this N=2000 % Generate a NbyN matrix where A(i,j) = i + j; for ii = 1:N for jj = 1:N [...]
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For my MA course on Wittgenstein earlier this year, students had to write a short essay, blog poststyle, on the Tractatus. One of them, Joseph Wilcox, took up the challenge of asking what exactly it means to say that Wittgenstein's project in the Tractatus is essentially a Kantian project ...
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5/22/2015"This statement is false."David
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5/22/2015Mathematicians born on this day:1848 : Hermann Schubert1865 : Alfred Dixo
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Data art is on the rise. Jacoba Urist for the Atlantic gets into the beginnings and its current prevalence.
Art is a constant march of expansion, according to Harvey Molotch,…Tags: Atlantic, rise
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Calculer la forme de la Terre, aux temps héroïques.

L'IHP, maison d'histoires
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Piste rouge,
featured
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(Click on the comic if you can't see the full image.) (C)Copyright 2015, C. Burke.My other choice: Every Kirk has his Gorn . . . The more I think about it, I might've gotten enough scifi references to fill that in, had I tried, had I tried ... Damn it, Jim! Meanwhile, 80s Week continues. Come back often for more funny math and geeky comics.
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Some Long Distance Blogging with about a million page views per year. Here are the historical figures: May 21, 2015, 4 million page viewsDecember 2, 2014, 3.5 million page viewsJune 7, 2014 3 million page viewsNovember 07, 2013, 2.5 million page viewsMay 27, 2013 2 million page views October 25, 2012, 1.5 million page viewsa page view is not the same as a unique visit, here is that figure: which amoints to 650 unique visits per day on average.Here as some interesting tags
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I've had a really busy year. I've always said at the start of the school year that I'm going to say 'no' more frequently in as politely a way as possible. I've said I'd be more honest about priorities. Instead … Continue reading →
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Pour la deuxième année, chaque semaine, un défi du calendrier mathématique...

Défis du Calendrier Mathématique
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I spent the last two days in class reflecting on mathematics with my students. Here’ the context: This week is state testing week. I only taught class two days, between testing days and field day Friday. I didn’t want to stress kids out while they were taking tests, but also wanted to be purposeful with […]
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asearchforbeauty:
Torus Knot
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Recently, I have been reviewing a new “CCSSAligned” middle school curriculum and find myself completely frustrated with the overabundance of scaffolding and lack of student thinking required on every assignment. Not having the days/weeks it would take for teachers to engage in the mathematics as both learners and teachers, I needed a short, powerful way […]