I'm sure this could be added. I'll note it in my final proposal. On Monday, April 8, 2013 6:57:42 PM UTC-4, David Joyner wrote: > > I would like all this *and* I'd ike this to work over finite fields:-) > > > On Mon, Apr 8, 2013 at 6:49 PM, Ben Fishbein <fish...@gmail.com<javascript:> > > wrote: > >> Hello, my name is Benjamin Fishbein. I am currently an undergraduate >> student at the University of Illinois at Champaign-Urbana scheduled for a >> double major in both Computer Science and Mathematics. I am very interested >> in working on SymPy as it combines two of my greatest passions. I have >> already published code currently being used in SymPy and hope to continue >> my contribution to this program over the Summer. While exploring SymPy’s >> code I observed that the matrices portion of the code was missing several >> crucial functions. Many of the missing function in SymPy's matrices class >> have to do with the Span of the group of vectors, however, SymPy does not >> have a Span class. My proposal for a Google Summer of Code project is as >> follows 1) Create a Span class capable of creating and modifying Spans. To >> begin I will make a class which has very simple functionality. Here is an >> example of the desired behavior of this class: x = Span([1,2,3],[4,5,6]) x >> /[1] [4]\ |[2] [5] | \[3],[6]/ x.dim() 2 x.add_column(2,[7,8,9]) x /[1] [4] >> [7]\ |[2] [5] [8] | \[3],[6], [9]/ x.dim() 3 y = x.basis() y /[1] [4]\ |[2] >> [5] | \[3],[6]/ 2) Next, I will implement in the matrices class simple >> functions which interact with the Span class. The functions I will >> initially focus on would be 'image', 'kernel', 'basis image', and 'basis >> kernel'. Here is an example of the desired behavior of this addition: x = >> Matrix([1,2,3],[4,5,6]) y = x.image() y #Span([1,2,3],[4,5,6]) /[1] [4]\ >> |[2] [5] | \[3],[6]/ 3) Finally, I will spend the remainder of my time >> expanding on both the Matrices and the Span class. I will add more complex >> functions and improve on the existing ones. This may also involve adding >> functions to other classes such as Physics and Statistics. Matrices are >> essential for many crucial aspects of Physics, Computer Science, >> Mathematics, Chemistry, Biology, Electrical Engineering, Industrial >> Engineering and many more fields. I feel that the additions which I have >> suggested will make SymPy a better resource for its users. Adding a Span >> class and improving on the Matrices class will make SymPy a more dynamic >> and versatile tool. Thank you for your consideration, if you have any ideas >> suggestions comments or critiques I would love to hear them so I may >> improve my submission. >> >> Thank you - Ben Fishbein >> >> -- >> You received this message because you are subscribed to the Google Groups >> "sympy" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to sympy+un...@googlegroups.com <javascript:>. >> To post to this group, send email to sy...@googlegroups.com <javascript:> >> . >> Visit this group at http://groups.google.com/group/sympy?hl=en-US. >> For more options, visit https://groups.google.com/groups/opt_out. >> >> >> > >
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