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for a lenghty description on usury, you could go here.

but in my understanding, usury only concern in profit, not copyright. even with allowing fatwa to disallow software patents, it(fatwa) had to throw away more thing with this action (as in respect for other person property/idea). it is not a good idea.

While it's true that we are much less fettered by export regulations than our neighbours to the south, we still do have some restrictions on the export of software here in Canada. For more information, see the following web pages:

Canada's Export Controls
Excerpts from the Export Control List of Canada
The Wassenaar Arrangement, which Canada has signed
Crypto Law Survey of Canada

And, more generally,
Electronic Frontier Canada

While it's true that we are much less fettered by export regulations than our neighbours to the south, we still do have some restrictions on the export of software here in Canada. For more information, see the following web pages:

Canada's Export Controls
Excerpts from the Export Control List of Canada
The Wassenaar Arrangement, which Canada has signed
Crypto Law Survey of Canada

And, more generally,
Electronic Frontier Canada

That such a treatment is possible, is not obvious, nature could have been that way, that one had to treat the whole system (like solving the wave equation for all particles at once) in order to make any useful statement at all.

Read this article on Atoms in Molecules by Richard Bader to find out more.

Bader claims that the study of the Laplacian (2nd spatial derivative) of the electron distribution leads to a natural spatial decomposition of a molecule.

Have a look at these great pictures for some simulations based on that AIM theory.

I am still surprised, that during my physics studies, I heard nothing about that treatment. You get exposed to Feynman of course, but Schwinger's formulation of quantumn electro dynamics I knew only as possible but not practical alternative. Very interesting to see Schwingers approach at the heart of this AIM theory.

That such a treatment is possible, is not obvious, nature could have been that way, that one had to treat the whole system (like solving the wave equation for all particles at once) in order to make any useful statement at all.

Read this article on Atoms in Molecules by Richard Bader to find out more.

Bader claims that the study of the Laplacian (2nd spatial derivative) of the electron distribution leads to a natural spatial decomposition of a molecule.

Have a look at these great pictures for some simulations based on that AIM theory.

I am still surprised, that during my physics studies, I heard nothing about that treatment. You get exposed to Feynman of course, but Schwinger's formulation of quantumn electro dynamics I knew only as possible but not practical alternative. Very interesting to see Schwingers approach at the heart of this AIM theory.

As a fellow Canadian, I hate to burst your bubble, but our Government certainly does impose (often arbitrary) censorship on what we consume.

If you're interested in more information look at The Chronical for Freedom of Expression
in Canada or the Supreme Court case against Canada Customs by Little Sisters bookstore.

Good to hear. However, contrary to popular belief, crypto is not "free" in Canada. For one thing, we have a joint agreement with the U.S. which means American encryption technology may be exported to Canada as long as it remains under the same restrictions once it reaches Canada. (i.e. cannot re-export to the world what we import from the U.S.A.). And there are some other restrictions as well. Click the following links for some more information.
http://insight.mcma ster.ca/org/efc/pages/doc/crypto-export.html
http://axion.physics.ubc.ca/ECL.html
In addition, Canada recently signed on to the multi-national agreement (big word starting with W) which places further restrictions on our freedom with regards to cryptography. What we need is a poster child to challenge the constitutionality of these laws, as you have done in the States.