I could not find the problem that you are stating in the video lecture On Thursday, March 21, 2024 at 9:21:52 PM UTC+5:30 [email protected] wrote:
> Can you please specify what purpose you are using it for. I do not know > its use yet but would like to get back to you after researching on its > usage . > > _ _ _ _ _ _ _ > Shishir > > On Tuesday 19 March 2024 at 22:54:42 UTC+5:30 [email protected] wrote: > >> Can anyone help me with this, please? >> >> On Mon, Mar 11, 2024, 06:06 Giovanni Sutanto <[email protected]> >> wrote: >> >>> Hi SymPy Community, >>> >>> I am now trying to understand what happens when I perform WedgeProduct >>> operations on SymPy. >>> >>> So, I understand how to use the SymPy's Wedge Product to some extent, >>> i.e. I was the one who responded to the question on Stack Overflow: >>> https://stackoverflow.com/questions/76981303/computing-the-wedge-product >>> >>> However, when I have: >>> ''' >>> my_matrix = Matrix([[2, 0, 5], [0, 7, 0]]) >>> r2_r_oneforms = R2_r.base_oneforms() >>> r2_r_vectors = R2_r.base_vectors() >>> >>> cols = [None] * 3 >>> for j in range(3): >>> cols[j] = 0 >>> for i in range(2): >>> cols[j] += my_matrix[i, j] * r2_r_vectors[i] >>> >>> cols_wedge_product = WedgeProduct(*r2_r_oneforms)(*cols) >>> print('cols_wedge_product = ', cols_wedge_product) >>> ''' >>> What I get is: >>> cols_wedge_product = -42 >>> >>> Where does the number -42 come from? >>> >>> On the other hand, if: >>> my_matrix = Matrix([[1, 0, 1], [0, 1, 0]]) >>> I get: >>> cols_wedge_product = 0 >>> What computation leads to 0 here? >>> >>> Can any of you please explain it, e.g. in the terms of the example in >>> the video lecture https://youtu.be/xRf9-hdxB0w?feature=shared&t=2961 ? >>> >>> Thanks so much in advance for your time! >>> >>> >>> Best Regards, >>> >>> Giovanni >>> >>> -- >>> You received this message because you are subscribed to a topic in the >>> Google Groups "sympy" group. >>> To unsubscribe from this topic, visit >>> https://groups.google.com/d/topic/sympy/-MAK_y6-9Yc/unsubscribe. >>> To unsubscribe from this group and all its topics, send an email to >>> [email protected]. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/sympy/b7fb6f7e-232d-4414-b938-1cdbab35cd76n%40googlegroups.com >>> >>> <https://groups.google.com/d/msgid/sympy/b7fb6f7e-232d-4414-b938-1cdbab35cd76n%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/a70211a9-d659-4daa-8999-2a6485273632n%40googlegroups.com.
