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Hello Sage users!

I was reading the documentation and trying to find a solution for my personal chimera of LaTeX usage: if I define $\mathbf A$ to be a matrix at some scope (document, chapter or section for example), why do I have to explictly write \mathbf every time?

So my question for Sage is this: say I have a simple 2x2 matrix

$$ \mathbf A = \left[ \begin{array}{rr} a & b \ c & d \end{array} \right] $$

I want to, at times, do symbolic manipulations with the letter representation of this matrix, then use the latex(...) command to print it as a bold upcase letter, and to use the full matrix form at other times (with its corresponding LaTeX form)

Is it possible to do this in Sage? And how?

Hello Sage users!

I was reading the documentation and trying to find a solution for my personal chimera of LaTeX usage: if I define $\mathbf A$ to be a matrix at some scope (document, chapter or section for example), why do I have to explictly write \mathbf every time?

So my question for Sage is this: say I have a simple 2x2 matrix

$$ \mathbf A = \left[ \begin{array}{rr} a & b \ \\ c & d \end{array} \right] $$

I want to, at times, do symbolic manipulations with the letter representation of this matrix, then use the latex(...) command to print it as a bold upcase letter, and to use the full matrix form at other times (with its corresponding LaTeX form)

sage: A = matrix(2,2,var('a', 'b', 'c', 'd'))
sage: latex(A)
\left(\begin{array}{rr}
a & b \\
c & d
\end{array}\right)
sage: latex(A.as_symbol())
\Bold{A}

sage: var('A', 'B', 'c')
sage: A,B :: AbstractMatrix
sage: latex(A)
\Bold{A}
sage: A*B
A*B
sage: (A+B)*c
A*c + B*c
sage: latex(A*B)
\Bold{A}\Bold{B}
sage: latex((A+B)*c)
\Bold{A}*c +  \Bold{B}*c

Is it possible to do this in Sage? And how?

Hello Sage users!

I was reading the documentation and trying to find a solution for my personal chimera of LaTeX usage: if I define $\mathbf A$ to be a matrix at some scope (document, chapter or section for example), why do I have to explictly write \mathbf every time?

So my question for Sage is this: say I have a simple 2x2 matrix

$$ \mathbf A = \left[ \begin{array}{rr} a & b \\ c & d \end{array} \right] $$

I want to, at times, do symbolic manipulations with the letter representation of this matrix, then use the latex(...) command to print it as a bold upcase letter, and to use the full matrix form at other times (with its corresponding LaTeX form).

Example of what I want:

sage: A = matrix(2,2,var('a', 'b', 'c', 'd'))
sage: latex(A)
\left(\begin{array}{rr}
a & b \\
c & d
\end{array}\right)
sage: latex(A.as_symbol())
\Bold{A}

Similarly, I would like it very much to perform symbolic calculations with A in sage defined as an "abstract matrix", i.e., a symbol of type matrix, that will render as a bold uppercase A (because is of type matrix) but will be used as a symbol in computations. Example.

sage: var('A', 'B', 'c')
sage: A,B :: AbstractMatrix
sage: latex(A)
\Bold{A}
sage: A*B
A*B
sage: (A+B)*c
A*c + B*c
sage: latex(A*B)
\Bold{A}\Bold{B}
sage: latex((A+B)*c)
\Bold{A}*c +  \Bold{B}*c

Is it possible to do this in Sage? And how?