# Questions tagged [symbolic-computation]

Numeric computation usually uses floating point numbers. Symbolic computations use symbols, and can give exact answers, such as $\sum_{n=1}^\infty \frac{1}{n^2} = \frac{\pi^2}{6}$. Mathematica, Maple, and Geometry Expressions all use symbolic computation, when desired. An online source is WolframAlpha.

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### When do blocks commute? Symbolic Dynamics and Coding Problem 1.1.6(b) [closed]

I solved part (a) which ask when do $u$,$v$ satisfy $uv=vu$ (Here multiplication is concatenation and the monoid is the free monoid on a finite number of letters) my answer was when there is a ...
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### How do you express np.argmin(A, axis=1) with a formula?

I want to express np.argmin with axis with formula. How can I express np.argmin(A, axis=1) as mathematical formula?
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### Symbolic solutions to system of Boolean equations

Is it possible to have a symbolic solution to a system of Boolean equations? E.g. (A and X) or (B and Y) = C (D and X) or (E and Y) = F Now produce solutions for X ...
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### How to find solve for second order pde with initial conditions using Wolfram Mathematica?

I have next task: $$\frac{\partial^2 u}{\partial x \partial y} = 0,~ u(x,x^2) = 0,~ \frac{\partial u}{\partial x}(x, x^2) = \sqrt{|x|},~|x| < 1$$ I write this, but it don't work: ...
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### How to assume positive sine in Maxima

I am new to using Maxima, and I am having some problems when developing some calculations in spherical coordinates. I used the following assumption: ...
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### Are there hybrid (discrete-continuous) combinatorial structures? Semantic parsing of multimedia data.

Are there hybrid (discrete-continuous) combinatorial structures, which can grow (develop) according to the discrete and continuous rules at the same time: i.e. some part for some time can grow ...
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### Expression simplification in sympy — symbolic integration

I am trying to integrate $$p_1=\int_0^1\int_z^1\int_y^1\frac{6x^2}{(x+y)(x+y+z)}\,\mathrm{d}x\,\mathrm{d}y\,\mathrm{d}z$$ which arose in connection with an earlier question. When I plug it into sympy,...
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### How to solve for unknown symbols in a base-3 number system?

Imagine that someone has a base-3 number system which is represented by A, B, and C. A, B, and C correspond to our usual 0, 1, and 2, but you do not know which is 0, which is 1, and which is 2. ...
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### F5 algorithm for non-regular sequences

Faugère proves in his first Paper about the F5 algorithm the termination of the algorithm for regular sequences and mentions that some slight changes can be done to adapt this algorithm for non-...
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### Binary polynomial convolution-like or-ing

I have two binary polynomials. For example $a(t)$, $b(t)$. I would like an algorithm which calculates the binary polynomial $c(t)$ such that, $$c_n = \sum_{i=0}^{n} (a_i * b_{(n-i)} ) \, > 0.$$ ...
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### How can I read the multinominal naive bayers in simple english?

I trying to studying about text classifier but I have some problems to understand the math representations of scikit.learn implementation: How can I describe this using simple english?
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### Is there anything online like the old “calca”?

Calca was a tool for Windows/Mac where you could type formulas with markdown text interspersed, like: # My work a=7 b=2+a^2 b=> 51 Where it would dynamically ...
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### Techniques for doing “handwritten” math with current 2020 technology?

A bit of a soft question here. But what techniques are people using to efficiently do analytical math that would have typically been handwritten in the past? For example, if you're working with a ...
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