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    Double Maths First Thing

    Double Maths First Thing: Issue 39

    By Colin Beveridge. Posted October 8, 2025

    DMFT is grateful for the last minute. Hello! My name is Colin and I am a mathematician on a mission to spread the joy and delight of doing maths and solving problems. Today I went to a school in Poole to talk about my career in maths and computing as part of Dorset Coding Week.…

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    cp's mathem-o-blog, Videos

    What on earth is the infinite least squares beanstalk?

    By Christian Lawson-Perfect. Posted October 7, 2025

    Christian looking puzzled in front of some maths, next to the cover of a Jack and the Beanstalk book.

    I’m trying something a bit different. Here’s a ten-minute video about a sequence I found on the OEIS.

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    Carnival of Mathematics

    Carnival of Maths 244

    By Katie Steckles. Posted October 4, 2025

    The next issue of the Carnival of Mathematics, rounding up blog posts from the month of September 2025, is now online at IoannaGeorgiou.com. The Carnival rounds up maths blog posts from all over the internet, including some from our own Aperiodical. See our Carnival of Mathematics page for more information.

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    News Roundup

    Aperiodical News Roundup – August/September 2025

    By Katie Steckles. Posted October 3, 2025

    Here’s a round-up of maths news stories from this month we haven’t otherwise covered on the Aperiodical (not including, of course, the important enneahedron news Christian just posted about).

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    Adventures in 3D printing, cp's mathem-o-blog

    Breaking enneahedron news!

    By Christian Lawson-Perfect. Posted October 3, 2025

    Three polyhedra: a triangular bipyramid, an associahedron, and a Herschel enneahedron.

    A nice person called Payton Asch sent me an email with an observation about the Herschel enneahedron: It looks like the underlying polytope for the enneahedron is a triangular bipyramid (two tetrahedra stacked on top of each other) or the dual polytope would be a triangular prism. In the case of the triangular bipyramid you…

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    Events, News

    #mathober 2025

    By Katie Steckles. Posted October 2, 2025

    A list of mathober prompts shown in two columns: Day 1: Link Day 2: Deviation Day 3: Polyhedron Day 4: Strongly Day 5: Digraph Sink Day 6: Partial Sum Day 7: Notation Day 8: Octagonal Heptagonal Day 9: Chi Day 10: Stellations Day 11: Orthogonal Polynomial Day 12: Monotonic Day 13: Sporadic Group Day 14: Augmented Matrix Day 15: Chord Day 16: Faithful Day 17: Wheel Day 18: Primitive Day 19: Domain Day 20: Reye Configuration Day 21: Sawtooth Day 22: Odious Day 23: Jacobian Day 24: Number Field Day 25: Wedge Day 26: Amalgamation Day 27: Bidiminished Day 28: Recursion Day 29: Hexyl Day 30: Minor Day 31: Central

    We’ve gone crashing into October and that means it’s also #Mathober, an annual maths/art celebration taking place on the internet. If you’re into maths or art, or both, and would like to try producing something creative this month, on an informal schedule, #mathober provides a structure for you to do that.

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    Double Maths First Thing

    Double Maths First Thing: Issue 38

    By Colin Beveridge. Posted October 1, 2025

    DMFT wants to be in the room where it happens Hello! My name is Colin and I am a mathematician on a mission to spread joy and happiness in doing maths, solving puzzles and generally figuring stuff out. We went to see Hamilton (the musical, not Academical) in the cinema at the weekend – I…

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The Aperiodical is a magazine and blog for people who already know they like maths and would like to know more.

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