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Matthew Scroggs

@mscroggs.co.uk

World's #1 matchbox fan

210 Posts640 Follower169 Folgt
Matthew Scroggs@mscroggs.co.uk · 3mo ago

Happy new paper day to me! doi.org/10.1007/s442...

DefElement: an encyclopedia of finite element definitions - Computational Science and Engineering

DefElement is an online encyclopedia of finite element definitions that was created and is maintained by the authors of this paper. DefElement aims to make information about elements defined in the literature easily available in a standard format. There are a number of open-source finite element libraries available, and it can be difficult to check that an implementation of an element in a library matches the element’s definition in the literature or implementation in another library, especially when many libraries include variants of elements whose basis functions do not match exactly. In this paper, we carefully derive conditions under which elements can be considered equivalent and describe an algorithm that uses these conditions to verify that two implementations of a finite element are indeed variants of the same element. The results of scheduled runs of our implementation of this verification algorithm are included in the information available on the DefElement website.

doi.org

Matthew Scroggs@mscroggs.co.uk · 4mo ago

Short answer: They're the pieces for a new puzzle-a-day style calendar that I found on which it isn't possible to display fake days like 31 September. Long answer at chalkdustmagazine.com/regulars/on-....

On the cover: A new puzzle every day - Chalkdust

Matthew Scroggs puts polyominoes inside polygons

chalkdustmagazine.com

Matthew Scroggs@mscroggs.co.uk · 4mo ago

Issue 23 of @chalkdustmag.bsky.social comes out on Monday. I did the maths for what's on the cover and I'm very excited about it being released. Without the back cover, it's not obvious what the pieces on the front are for. Any guesses?

The cover of Chalkdust issue 23. It features 9 pieces: one tetromino (the T block from Tetris), five pentominoes and three hexominoes. The art is done to look like a retro video game.
Matthew Scroggs@mscroggs.co.uk · 4mo ago

If a description of the ship of Theseus has had every reference to the ship of Theseus replaced with a reference to Trigger's broom, is it still a description of the ship of Theseus?