Four-Dimensional Zoetropes

Mechanical Turing Machine turned 7 today!

Tue, 19 Jun 2018 11:44:01 -0500

Mechanical Turing Machine turned 7 today!

Corpus Mathematica turned 5 today!Jun 10 (9 days ago)

Tue, 19 Jun 2018 11:42:04 -0500

Corpus Mathematica turned 5 today!

Jun 10 (9 days ago)

California Assembly Needs to Know: The Whole Internet is Watching

Mon, 18 Jun 2018 16:45:19 -0500

fight4future:

FOR IMMEDIATE RELEASE: Monday, June 18, 2018
Contact: Evan Greer, 978-852-6457, press@fightforthefuture.org

There is good news for net neutrality coming out of California today, where two State Senators have combined their bills, SB 822 and SB 460, ahead of a key hearing this Wednesday before the Communications and Conveyance Committee. AT&T and other ISPs have been pouring money into lobbying and spreading misinformation, and were attempting to kill both bills by playing them against each other.

The combined bills leave all critical net neutrality protections intact, and if passed would set a gold standard for state-level open Internet legislation across the country. But telecom monopolies are still pushing hard to kill or water down the bills at the hearing this Wednesday, and contacts on the ground in Sacramento indicate that the committee chairman Miguel Santiago is being heavily lobbied by ISPs to do just that.

“It’s unthinkable that California Democrats would even consider weakening an extremely popular net neutrality bill in the immediate wake of the FCC’s attack on our Internet freedom,” said Evan Greer, deputy director of Fight for the Future, a digital rights group with more than 350,000 members in California. “The free and open Internet is essential for every social movement combating corruption and authoritarianism. California Assembly members need to listen to their constituents, small business owners, and community groups – not AT&T’s lobbyists. The whole Internet is watching.”

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konkretegifs: #92 Title: Expanding cube Technique: Drawing with...

Sun, 17 Jun 2018 21:44:18 -0500

konkretegifs:

#92

Title: Expanding cube

Technique: Drawing with pencil on printed Blender frames (30 Frames)

Simone Giertz is creating Shitty Robots | Patreon

Mon, 04 Jun 2018 14:16:24 -0500

Simone Giertz is creating Shitty Robots | Patreon:

Simone is in recovery from her surgery now!

prostheticknowledge: Shape Representation by...

Tue, 29 May 2018 14:35:25 -0500

prostheticknowledge:

Shape Representation by Zippables

Computational Fabrication research from the Interactive Geometry Lab can turn 3D model files into objects with textiles, connecting parts and forming shape using zip fasteners:

Fabrication from developable parts is the basis for arts such as papercraft and needlework, as well as modern architecture and CAD in general, and it has inspired much research. We observe that the assembly of complex 3D shapes created by existing methods often requires first fabricating many small parts and then carefully following instructions to assemble them together. Despite its significance, this error prone and tedious process is generally neglected in the discussion. We present the concept of zippables – single, two dimensional, branching, ribbon-like pieces of fabric that can be quickly zipped up without any instructions to form 3D objects. Our inspiration comes from the so-called zipit bags (just-zipit.com), which are made of a single, long ribbon with a zipper around its boundary. In order to assemble the bag, one simply needs to zip up the ribbon. Our method operates in the same fashion, but it can be used to approximate a wide variety of shapes. Given a 3D model, our algorithm produces plans for a single 2D shape that can be laser cut in few parts from fabric or paper. A zipper can then be attached along the boundary by sewing, or by gluing using a custom-built fastening rig. We show physical and virtual results that demonstrate the capabilities of our method and the ease with which shapes can be assembled.

More Here

mathed-potatoes: girlsdomathstoo: hardlocke: rebrobindoesmath: kubleeka: Poll: Topology or...

Wed, 23 May 2018 11:25:38 -0500

mathed-potatoes:

girlsdomathstoo:

hardlocke:

rebrobindoesmath:

kubleeka:

Poll: Topology or Number Theory?

Number Theory!

Topology!

Number theory!!!!!

Read it here: https://arxiv.org/abs/0904.3399

https://en.wikipedia.org/wiki/P-adic_number

https://en.wikipedia.org/wiki/P-adic_number#Topology

A scheme showing the topology of the dyadic (or indeed p-adic) integers. Each clump is an open set made up of other clumps. The numbers in the left-most quarter (containing 1) are all the odd numbers. The next group to the right is the even numbers not divisible by 4.

The topology of Z_p is that of a Cantor set C

P-adic numbers are topologically fractal

Kevin Van Aelst

Mon, 14 May 2018 11:44:24 -0500

Kevin Van Aelst:

profeminist: pringlesaremydivision: so you’ve seen gifs of...

Fri, 11 May 2018 11:46:07 -0500

profeminist:

pringlesaremydivision:

so you’ve seen gifs of simone giertz’s shitty robots, right? of course you have.

she’s amazing. she’s hilarious. she’s a woman in STEM, kicking ass.

she just found out she has a brain tumor.

the doctors are pretty sure it’s benign, but it’s big, and she’s gonna have to have pretty major surgery which is gonna keep her from making videos for a while.

while she’s recovering, her patreon is pretty much gonna be her only source of income, so if you enjoy the gifs of her videos, or just want to support a pretty awesome chick who needs some help, you might want to kick a few dollars over that way.

(i’m not associated with simone in any way, i don’t know her - other than the fact that she favorited one of my tweets once! - but i absolutely adore her personality and her work and i haven’t seen any posts about this, so i figured i’d put something up.)

simone’s youtube - instagram - twitter - patreon

Sculpture of Time turned 5 today!

Wed, 09 May 2018 11:33:12 -0500

Sculpture of Time turned 5 today!

3D Fractal Zoom turned 2 today!

Thu, 03 May 2018 11:28:44 -0500

3D Fractal Zoom turned 2 today!

TechKnowLedge turned 6 today!November, 2009 I walked into the...

Thu, 03 May 2018 11:08:28 -0500

TechKnowLedge turned 6 today!

November, 2009 I walked into the Urbana-Champaign Independent Media Center saying, “Where is our local Hackerspace?” Well, it didn’t exist, so we made one! Thanks to Jeff Putney, Rose Kaszmarowski, Emily Knox and many more, the membership of the Makerspace exploded and has just kept growing.

Not long after the Makerspace opened, Americorps Volunteer Brian Duggan and I proposed a radio show whose mission was to “bridge the digital divide”. Brian moved to Washington, DC a year or so later to join the Open Technology Institute of the New America Foundation. So, I was left to carry on TechKnowLedge on my own. (Brian was never keen on getting up in time to go on the air for Morning Drive – 8:00-9:00 AM). But, I’ve kept it up for almost nine years now. Recordings of past shows are Archived for podcast at http://stream.wrfu.net/wrfu-recordings/TechKnowledge/

When Kickstarter first started up, I posted a bunch of my projects. And one of the requirements, according to the Kickstarter criteria, was to cross-post my projects to tumblr. So, I did. And I love it. I’ve got about a dozen tumblrs now. And TechKnowLedge is the high-bandwidth of my tumblrs. It is the blog I keep for the radio show. News & views from the making and hacking community.

Decades-Old Graph Problem Yields to Amateur Mathematician

Tue, 17 Apr 2018 13:27:20 -0500

Decades-Old Graph Problem Yields to Amateur Mathematician

fuckyeahphysica: If one remembers this particular episode from...

Mon, 16 Apr 2018 11:24:21 -0500

fuckyeahphysica:

If one remembers this particular episode from the popular sitcom ‘Friends’ where Ross is trying to carry a sofa to his apartment, it seems that moving a sofa up the stairs is ridiculously hard.

But life shouldn’t be that hard now should it?

The mathematician Leo Moser posed in 1966 the following curious mathematical problem: what is the shape of largest area in the plane that can be moved around a right-angled corner in a two-dimensional hallway of width 1? This question became known as the moving sofa problem, and is still unsolved fifty years after it was first asked.

The most common shape to move around a tight right angled corner is a square.

And another common shape that would satisfy this criterion is a semi-circle.

But what is the largest area that can be moved around?

Well, it has been conjectured that the shape with the largest area that one can move around a corner is known as “Gerver’s sofa”. And it looks like so:

Wait.. Hang on a second

This sofa would only be effective for right handed turns. One can clearly see that if we have to turn left somewhere we would be kind of in a tough spot.

Prof.Romik from the University of California, Davis has proposed this shape popularly know as Romik’s ambidextrous sofa that solves this problem.

Although Prof.Romik’s sofa may/may not be the not the optimal solution, it is definitely is a breakthrough since this can pave the way for more complex ideas in mathematical analysis and more importantly sofa design.

Have a good one!

John Perry Barlow: Honoring an Internet Hero

Fri, 06 Apr 2018 07:40:28 -0500

mostlysignssomeportents:

Individuals from the furthest corners of cyberspace will gather in San Francisco this weekend to celebrate the life and incredible legacy of Internet visionary, Grateful Dead lyricist, and EFF co-founder John Perry Barlow. If you are unable to attend in person, we encourage you to join us virtually as we commemorate the ways Barlow changed the shape of the world online.

Share Your Remembrances

We are gathering John Perry Barlow memories, thoughts, and stories from the community throughout the weekend. Stories submitted on our Barlow Remembrance Page will be uploaded and shared with future generations on the Internet Archive. We hope you will consider offering your Barlow well-wishes and tales of adventure for the collection!

Share your Barlow stories at eff.org/RememberingBarlow.

Support Internet Freedom

John Perry Barlow helped form the Electronic Frontier Foundation after recognizing the incredible potential of the Internet to empower, but also repress. Twenty-seven years later, EFF continues to work at the bleeding edge of technology to protect the rights of the users in issues as diverse as net neutrality, artificial intelligence, opposing censorship, and fighting mass surveillance.

In celebration of Barlow’s leadership, vision, and undeniable swagger, EFF Art Director Hugh D'Andrade created an interpretation of the man himself in retro rock poster style for our newest member t-shirt. It’s a tribute to both Barlow’s musical history and his independent spirit.

On the back: ‘Unlike previous frontiers, there is no end to this one.’

You can even get the t-shirt or pre-order a hooded sweatshirt without becoming a member. We just ask that you share the spirits of openness, community, and empowerment that Barlow valued whenever you wear it!

Barlow Internet Ideas Symposium

On Saturday, EFF and the Freedom of the Press Foundation present the Barlow Symposium at the Internet Archive. A series of luminary speakers will reflect on Barlow’s impact on digital civil liberties, a fair and open Internet, open culture, and the right to know. Together we’ll discuss what his ideas meant for the early web, how they have influenced the Internet we enjoy today, and how we can continue the fight for freedom online. The speaker panel spans across digital freedom history including Ed Snowden, Mitch Kapor, Steven Levy, and many others.

Online registration is currently full, but we invite you to join the livestream on the Internet Archive’s YouTube channel from 2 PM to 6PM Pacific.

Barlow’s Philosophy

We invite you to learn more about his ideas at EFF’s online library. Dig into his seminal essay A Declaration of the Independence of Cyberspace, find out about the forces that generated EFF with Across the Electronic Frontier, and much more. In need of audiovisual stimulation? Check out the Internet Archive’s Barlow collection, too.

Wherever you are, we hope you are celebrating the spirit that ignited EFF and left an indelible mark on this connected world.

https://www.eff.org/deeplinks/2018/04/john-perry-barlow-honoring-internet-hero

@Ekadhikena Purvena turned 7 today!

Fri, 09 Mar 2018 13:24:19 -0600

@Ekadhikena Purvena turned 7 today!

hyrodium: One of my work from last year.A paper model of...

Mon, 26 Feb 2018 11:46:40 -0600

hyrodium:

One of my work from last year.
A paper model of Helicoid and Catenoid.
It transforms like this animation.

I’m now making a better version of this model!

mathhombre: regolo54: Celtic Knot I love the zigzag breaks.

Sat, 24 Feb 2018 12:53:39 -0600

mathhombre:

regolo54:

Celtic Knot

I love the zigzag breaks.

mathhombre: franki3nstein: embroid-away: 12 Fundamental...

Wed, 21 Feb 2018 06:59:55 -0600

mathhombre:

franki3nstein:

embroid-away:

12 Fundamental Graphs
(with three of my favorites for a closer view of the details)

Stitches calculated to the 0.125 for graph accuracy 📈😉👌🏻

Want

On point #mathart.

http://econoenigma.tumblr.com/ turned 7 today!

Fri, 16 Feb 2018 05:56:05 -0600

http://econoenigma.tumblr.com/ turned 7 today!