Lightnews — Scholar-powered news

Original Math Designs @diffgeom.com · 1d

Wisp earrings are discounted 15% through October, or while stock lasts! Price includes shipping within the US.

The shape is swept by translating x=sin(z) in z at unit speed while revolving at unit angular speed about the z-axis.

www.diffgeom.com/product/wisp...

#MathArt #3dPrinting #Jewelry

A photograph of three pairs of undulating nylon earrings, in black, blue, and red.

2 8

Original Math Designs @diffgeom.com · 3d

If circles in configuration spaces are your thing, check out my differential-geometric wall clocks, such as this catenoid-helicoid dance, only from Differential Geometry:

www.diffgeom.com/product/wall...

#MathSky #MathArt

Dance around the clock: A gold-red catenoid morphs into a helicoid and back in twelve equally-spaced snapshots of a famous isometric deformation.

1 7

Original Math Designs @diffgeom.com · 4d

This conic sections poster is ... Octobery (in the northern hemisphere)
www.diffgeom.com/product/post...

Browse all my poster images:
www.diffgeom.com/product-cate...

#MathSky #MathArt

Sixteen images of a cone rotating about an axis through the vertex and perpendicular to its own axis, cut by a horizontal plane above the vertex, and seen obliquely. Each cone is warmly-colored like molten metal, grading from bright gold to brick red along the cone axis. The images are arranged around a circle like numbers on a clock face, with the image's position equal to the cone's angle of rotation. The cones float against a twilit sky grading from medium blue at the bottom to dark blue, and together they comprise a glowing bracelet-like ring.

2 15

Reposted by Original Math Designs

nanma80.bsky.social @nanma80.bsky.social · 5d

Two puzzles I'm building:
🔴 12 pieces slide into a cube with coordinated motions in 2D abstract space.
🔵 30 pieces form a dodecahedron with 4D motions.
Inspired by John Kostick's designs. john-kostick.github.io/vzome-sharin...

2 9 14

Original Math Designs @diffgeom.com · 4d

Very well said!

That is why (regrettably large) parts of mathematical research today amount in practice to weapons work

1

Reposted by Original Math Designs

Mike Sowden @mikeachim.bsky.social · 4d

Thanks to my friend James Horton, I have just discovered the work of Danish painter of Peder Mørk Mønsted (1859-1941) and HOW CAN A PERSON NEARLY A HUNDRED YEARS AGO PAINT SOMETHING THAT LOOKS LIKE IT'S A PHOTO ON AN IPHONE WHAT IS THIS ABSOLUTE SORCERY.

Photo....no, wait, a PAINTING, by Peder Mørk Mønsted, of the snow-laden banks of a river that looks absolutely photo-real.

Another painting by Peder Mørk Mønsted that looks utterly photo-realistic of a tree-lined river with utterly convincing shades of green-tinted darkness and perfect reflections in the river below.

10 45 190

Original Math Designs @diffgeom.com · 4d

Beautiful!

Ivan Shishkin's work lands similarly for me; off to peruse Mønsted.... en.wikipedia.org/wiki/Ivan_Sh...

Ivan Shishkin - Wikipedia

en.wikipedia.org

Reposted by Original Math Designs

Chad Topaz Queer DEI Race Traitor @chadtopaz.bsky.social · 4d

I AM STUNNED. Unlocking Justice (now available for preorder) is the #2 public policy book on Amazon, the #1 new release in applied math, and in the top 50 in math overall. Thank you for lifting this work up. If you believe in its optimistic & accessible message, plz share so more people can find it.

Unlocking Justice: The Power of Data to Confront Inequity and Create Change

Amazon.com: Unlocking Justice: The Power of Data to Confront Inequity and Create Change: 9780691276151: Topaz, Chad M.: Books

www.amazon.com

8 28

Original Math Designs @diffgeom.com · 5d

Partial to the great dodecahedron: It has genus 4 (possibly despite appearances), and radial projection from the center defines a 3-sheeted map to the sphere branched at the 12 vertices, with two sheets coming together at each vertex.

2

Reposted by Original Math Designs

Original Math Designs @diffgeom.com · 21d

I design and sell mathematically-accurate jewelry inspired by differential and algebraic geometry, and topology, and invite you to browse!

www.diffgeom.com/product-cate...

#MathSky #MathArt #Jewelry #3DPrinting

A gallery of 15 photographs of shiny mathematical pendants and earrings at Differential Geometry.

1 15

Original Math Designs @diffgeom.com · 5d

#MathSky #MathArt

Frederik Vanhoutte - Winterbloed @winterbloed.be · 7d

2 16

Original Math Designs @diffgeom.com · 6d

A new blog post, hopefully accessible to anyone who has seen cosine and sine, illustrating and explaining trig nets ("Lissajous figures"), trig pyramids (3D printed model shown), and other fun with 4- and 6-D geometry:

www.diffgeom.com/blogs/about-...

#MathSky #MathArt #ITeachMath #3DPrinting

Another photograph of the white 3D-printed nylon model looking like a radiator-finned pyramid wrapping arms around itself.

Photograph of a white 3D-printed nylon model looking like folded fingers or a (2,3) trig net.

1 3 19

Original Math Designs @diffgeom.com · 6d

Looking for mathematical greeting cards? I have boxes of 10 in stock!

www.diffgeom.com/product-cate...

Supplies are limited; price includes shipping within the US.

#MathSky #MathArt #SmallBusiness

A virtual winter scene depicting a Georgia O'Keeffe-like enameled orb over a silhouetted range of mountains under a winter sky, dusted with five-pointed stars.

1 2 8

Reposted by Original Math Designs

$fractalkitty.com$

Sophia (she/her) @fractalkitty.com · 7d

The first day of the 6th year of Mathober!

Today's prompt is Link.

I will post on blue-skee and this blog post as the month goes on:

www.fractalkitty.com/mathober-202...

I might code something later, but not sure yet.

#mathober #mathober2025 #mathart #mtbos

Six rings held togher by a single ring going over and under, where each ring is a circular tree branch with lichen, moss, ferns, and mushrooms growing off. Everything is radially symmetrical so that the six rings have repeated growths and lighting. On each ring there is a brown creeper facing clockwise with a dark speckled top and white brest with a curved beak. it faces a tiny mushroom. the background goes from a light yellow to dark slate blue from the off-center center of the radial sketch with a smeared cloudy feel to it. in the lower corner is a signature S with a period.

2 15

Original Math Designs @diffgeom.com · 8d

Not sure of your budget and other constraints, but these independent creators' shops (including mine, by way of disclosure :) prospectively give the dual benefits of supporting a small business and ... not supporting amazon:
www.diffgeom.org/misc/math_sh...

Mathematical Online Shops

www.diffgeom.org

2

Reposted by Original Math Designs

Gizem Karaali 🧿 @gizem-karaali.bsky.social · 8d

Hi Blue Sky! I edit the Journal of Humanistic Mathematics. We publish articles, essays, #fiction & #poetry on doing, teaching & living of #mathematics. So far we had more than 850K full-text downloads of our content - why not check us out? scholarship.claremont.edu/jhm/ #math #openaccess #mathart

Journal of Humanistic Mathematics - an online-only, open access, peer reviewed journal | Current Journals | Claremont Colleges

Journal of Humanistic Mathematics - an online-only, open access, peer reviewed journal published by the Claremont Colleges Library.

scholarship.claremont.edu

5 10

Reposted by Original Math Designs

robertfathauer.bsky.social @robertfathauer.bsky.social · 12d

New sculpture illustrating the fact that cutting a three-half-twists band lengthwise results in a trefoil knot. Unglazed ceramic and leather cord.

2 16

Original Math Designs @diffgeom.com · 9d

Geometric life hack: To measure water and rice in a 2-to-1 ratio, pour water into a cylindrical pan, then pour rice in a cone whose base covers the pan bottom and whose vertex is at the surface.

#MathSky #ITeachMath

2 1 13

Reposted by Original Math Designs

DavidPetro314 @davidpetro314.bsky.social · 10d

[New Post] Ontario Math Links - My favourite #math related links from this week:

ontariomath.blogspot.com/2025/09/math...

Links and help from @diffgeom.com @robertkaplinsky.com @howiehua.bsky.social @edutopia.org @jennalaib.bsky.social and more #MathChat #MTBoS #iTeachMath

3 9

Original Math Designs @diffgeom.com · 11d

Thank you! Please do browse, and pass along the link....

1

Reposted by Original Math Designs

Original Math Designs @diffgeom.com · 13d

Three original pendant/earring designs at Differential Geometry. Links and mathematical descriptions are in the alt text. I invite you to browse all my designs here:

www.diffgeom.com/product-cate...

#MathArt #Jewelry #3DPrinting

Six photographs of matching silver pendant and earring sets.

"Intimo" is a trefoil knot on a conformally-parametrized torus, resembling linked rings, symbolizing eyes filled with positive regard.
https://www.diffgeom.com/product/intimo-necklace/
https://www.diffgeom.com/product/intimo-earrings/

"Vivace" is a lively, spiraling, climbing minimal surface.
https://www.diffgeom.com/product/vivace-necklace/
https://www.diffgeom.com/product/vivace-earrings/

"Anemone" resembles two intertwining bands, though on closer gaze there is only one, eternally joined.
https://www.diffgeom.com/product/anemone-silver-necklace/
https://www.diffgeom.com/product/anemone-silver-earrings/

1 5 25

Reposted by Original Math Designs

Leah Berman Williams @leahwrenn.bsky.social · 12d

I ordered a couple of small metal prints of some of my sculptures from Craftcloud (IN3DTEC was the printer). Spendy (and don’t forget the extra $30 in tariffs!), but they came out looking pretty darn spectacular!

#mathart

Two swirly polished steel sculptures, with a pencil for scale. They’re about 1.5”/35mm tall

Closeup on sculpture 1, with tetrahedral symmetry and swirly connections

Sculpture 2, with cubical symmetry and swirls from the vertices to the center

8 7 42

Original Math Designs @diffgeom.com · 12d

A friendly reminder not to mistake reflections -- words and concepts of narcissists, the screen you are staring at this very second -- for reality.

#MathSky #MathArt

Multiple turns of a blue spiraling surface, shaded orange-gold as if lit by firelight, partly immersed in and reflected from a vertical mirror.

1 2 16

Reposted by Original Math Designs

Dr. Martin Skrodzki @msmathcomp.bsky.social · 12d

New chance to exhibit your latest #MathArt. Send them your finest!

robertfathauer.bsky.social @robertfathauer.bsky.social · 13d

Submissions are now being accepted for the Exhibition of Mathematical Art to be held as part of the Joint Mathematics Meetings, Washington, DC, in January of 2026. Apply online through October 15 at gallery.bridgesmathart.org. pic.x.com/MGSEyexSzo

2 10

Original Math Designs @diffgeom.com · 13d

My online shop Differential Geometry leans toward old school. Around the 1st of each month I email a short, human-written newsletter containing shop news, discount codes, .... Your email is stored securely, and I do not share or sell it. Sign up (at bottom) here:

www.diffgeom.com

#MathSky #MathArt

A compound photo-plot showing a minimal surface looming in a sunset sky as if the size of a cumulonimbus cloud, lit orange at the top and gray at the bottom.

1 14