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RSS Feed for Wolfram Community showing any discussions in tag Algebra sorted by activeNo output from Solve[ ]?
https://community.wolfram.com/groups/-/m/t/2241678
Could someone please look at this and tell me what's wrong? It's probably a simple mistake. I think this system of equations should return {{pd -> -3}, {pd -> 10}}. At least, that's what I get when I use a pencil and paper. But my input below doesn't return anything. Not even an error message.
&[Wolfram Notebook][1]
[1]: https://www.wolframcloud.com/obj/6d7028ba-c944-483e-8c18-3b422736dce5Jay Gourley2021-04-12T05:45:56ZHow do you create an array in the web-based Mathematica Student Edition?
https://community.wolfram.com/groups/-/m/t/2825596
We are working with large matrices and it would help to be able to insert a blank matrix like you can in a notebook and quickly put in the numbers, rather than use the cumbersome {{a,b},{c,d}} notation. In a notebook, you can do Insert > table/matrix, but this is not available in the Student edition. The basic math assistant palette is also missing. You also can't copy and paste a matrix in matrix form from the output to a new input to change the numbers. Any help would be greatly appreciated.Fumiko Futamura2023-02-07T22:25:36ZGrassmann Algebra & Calculus Paclet Available
https://community.wolfram.com/groups/-/m/t/2825558
A Mathematica paclet application for Grassmann Algebra and Calculus is now available at Dropbox. The link for the paclet and my email address are in my profile.
The key attribute of Grassmann algebra is that it algebraicizes the notion and modeling of linear dependence and independence. It can be interpreted to many applications with contextual notation. The most important applications are mathematics, geometry, physics and engineering. Because of its basic antisymmetric nature, it is tensorial in nature being invariant to coordinate transformations. One can write coordinate free expressions applicable to finite dimensions. A metric construct and measure arises from its basic axioms. One can compute with or without a metric. It can distinguish between points and free vectors. It can treat basis vectors as derivative operators, and reciprocal basis vectors as differential forms. It is, as John Browne writes: " a geometric calculus par excellence".
The Grassmann algebra contains exterior, regressive, interior, generalized, hypercomplex, associative, and Clifford products. The Grassmann complement is a generalized Hodge star operator. The calculus routines include vector operators, the exterior derivative and the generalized vector calculus operators. All advances product expressions can be simplified to scalars and canonical exterior expressions.
There are various built-in spaces with their associated coordinates, bases (vector, differential form and orthonormal), metrics and symbols. It's possible to define spaces and then switch between various spaces on the fly.
Grassmann Calculus is thus a powerful application for education or work in multilinear algebra, geometry, differential geometry, physics and engineering.
The GrassmannCalculus Palette, available from the Mathematica Palettes menu, is very useful when using the application. Another useful palette is the Common Grassmann Operations palette available from the GrassmannCalculus Palette, drop-down Palettes menu.
John Browne's Foundations book is included (as notebooks) in the paclet. For the paclet to be useful one must learn the foundations, which is probably equivalent in time to a two semester college course or maybe learning tensor calculus.
The extended Grassmann algebra theory and routines were developed by John Browne and follow closely Hermann Grassmann's work. The calculus routines were written by David Park who also designed the user interface.
You can contact David Park at the email address in my profile.
John Browne's (1942-2021) web site is at: [Grassmann Algebra][1]
[1]: https://sites.google.com/view/grassmann-algebra/homeDavid J M Park Jr2023-02-07T19:34:39ZSimplify function argument
https://community.wolfram.com/groups/-/m/t/2823944
In a more complicated expression I would like Mathematica to simplify
Integrate[f[x - Floor[x]], {x, 0, 1}]
to
Integrate[f[x], {x, 0,1 }]
Simplify[...] doesn't seem to do it. Ideas? Thanks.julio kuplinsky2023-02-04T14:48:53Z