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The reason why many sheaves satisfy the sheaf condition is that they consist of some collection of "functions to a target space" satisfying a further predicate which is "local", i.e. can be checked by…
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I've received a lot of feedback from devs while working on getting Mithril, Lodash and Rx to support Fantasy Land regarding the heady language used in the specification. It is intimidating and create…
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It would be great if we could do
```
sage: E = EllipticCurve([0,0,0,3,0]) # curve with CM by Q[I]
sage: (1 + I) * P([1,2])
```
This wouldn't be very hard for CM elliptic curves over QQ, since the n…
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Hello, I am interested in exploring the concept of periodicity in art and mathematics, and I have a specific idea that I would like to formalize and express mathematically. My idea is based on the con…
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## Overview
Now we have an [implementation](https://github.com/rchain/rchain/blob/859ae7cc4523f2f6d0b33fca21ff3d0ec3462b49/rspace/src/main/scala/coop/rchain/rspace/history/instances/RadixHistory.scal…
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If the expression is not known to be finite then it is probably better to return an unevaluated expression
```
>>> e = (1 + x**2 + (1 - x)*(1 + x))
>>> e.as_real_imag()
(2, 0) >> e.subs(x,oo)
nan
``…
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That is a very interesting idea. EBNF is a family of metasyntax notations that can be used to express context-free grammars, such as those of programming languages¹. HoTT is a branch of mathematics an…
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This ticket adds a preliminary Sage package for CGAL, the Computational Geometry Algorithms Library. http://www.cgal.org/index.html
It is a huge package. My main interest, right now, comes from a n…
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The conclusion I now draw from the discussion of Alex Chapman's [Zulip issue](https://agda.zulipchat.com/#narrow/stream/259644-newcomers/topic/TotalOrder.20and.20Semigroup.20constraints) is that we sh…