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This is blocked on #128 (new parser) because tree positions are based on what the tree looks like.
we use `changeGroups` right now to show what part of a tree has changed
@tkosan:
> tree pos…
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I'm really loving the new(ish) custom validation options that STACK 4.4.3 introduced and am finding many places that they are useful. They are making a bigger impact on how I approach question writing…
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Let's take the "viral" expression that's going through all of social media - 6/2(1+2).
The answer to that is, of course, 9. (Those who say 1, update your OoO to post-1917).
However, if you input t…
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This ought to be easy:
>>> var("a b t")
(a, b, t)
>>> integrate(exp(-a*t), (t,b,oo))
Integral(exp(-a*t), (t, b, oo))
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Dear Rubi Team,
I started a port of Rubi to Maxima, which is based on the idea of the late Albert Rich to automatically convert the rule base to a decision tree - which should then be easily portab…
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Hi all,
I'm just working on some exam questions and came across one odd issue again. Namely: STACK seems to be not able to have complex numbers passed to the `stackunits` function. There is no error …
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I reviewed the current status of the [MOVPE IKZ Ga2O3 Experiment schema](https://github.com/FAIRmat-NFDI/AreaA-data_modeling_and_schemas/tree/main/movpe_IKZ_Ga2O3), also with a focus on connecting the…
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SymPy has [a ton](http://www.sympy.org/en/features.html) of features. Here are some suggestions on which ones we should discuss in depth. This already feels like a lot, so we may need to cut some of i…
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[FORM](https://github.com/vermaseren/form) (see also the Wikipedia [entry](http://en.wikipedia.org/wiki/FORM_%28symbolic_manipulation_system%29)) is a great tool for manipulating large expressions, th…
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As discussed on [sagedevel](https://groups.google.com/g/sage-devel/c/cuYVxld88Ng/m/nNfV4jxBBAAJ), the following determinant is 0, but that's not what sage says:
```
sage: a,b,c,d,e,z = var("a b c d…