singular

I am trying to write a little unwrapper for meshes. This uses a finite-element-method to solve for minimal linear stress between flattened and the raw surface. At the moment there are some vertices pinned to get a result. Without this the triangles are rotated and translated randomly... But as this pinning isn't necessary for the problem, the better solution would be to directly solve the singular matrix. Petsc does provide some methodes to solve a singular system by providing some information on the nullspace. http://www.mcs.anl.gov/petsc/petsc-current/docs/manual.pdf#section.4.6 I wonder if

This question could refer to any computer algebra system which has the ability to compute the Groebner Basis from a set of polynomials (Mathematica, Singular, GAP, Macaulay2, MatLab, etc.). I am working with an overdetermined system of polynomials for which the full groebner basis is too difficult to compute, however it would be valuable for me to be able to print out the groebner basis elements as they are found so that I may know if a particular polynomial is in the groebner basis. Is there any way to do this? If you implement Buchberger's algorithm on your own, then you can simply print out

I have a search route which I would like to make singular but when I specify a singular route it still makes plural controller routes, is this how it's supposed to be? resource :search Gives me search POST /search(.:format) {:action=>"create", :controller=>"searches"} new_search GET /search/new(.:format) {:action=>"new", :controller=>"searches"} edit_search GET /search/edit(.:format) {:action=>"edit", :controller=>"searches"} GET /search(.:format) {:action=>"show", :controller=>"searches"} PUT /search(.:format) {:action=>"update", :controller=>"searches"} DELETE /search(.:format) {:action=>

A "Singular Iterator" is defined as an: iterators that are not associated with any sequence. A null pointer, as well as a default-constructed pointer (holding an indeterminate value) is singular My question 1 would be: Is a default constructed iterator considered a "Singular Iterator"? Secondly, I have been told here that: Results of most expressions are undefined for singular values; the only exceptions are destroying an iterator that holds a singular value, the assignment of a non-singular value to an iterator that holds a singular value, and, for iterators that satisfy the

I have txt files that look like this: word, 23 Words, 2 test, 1 tests, 4 And I want them to look like this: word, 23 word, 2 test, 1 test, 4 I want to be able to take a txt file in Python and convert plural words to singular. Here's my code: import nltk f = raw_input("Please enter a filename: ") def openfile(f): with open(f,'r') as a: a = a.read() a = a.lower() return a def stem(a): p = nltk.PorterStemmer() [p.stem(word) for word in a] return a def returnfile(f, a): with open(f,'w') as d: d = d.write(a) #d.close() print openfile(f) print stem(openfile(f)) print returnfile(f, stem(openfile(f)))