11. This resource is considered to be an optimal collection of terminology to test functions with. 12. For all smooth test functions g that vanish outside of \ mathcal { B }. 13. For divergence-free test functions satisfying appropriate boundary conditions. 14. A typical space of test functions consists of all smooth functions on "'R "'with compact support. 15. A bilinear form on " D " arises by pairing the image distribution with a test function . 16. The basic space of test function consists of smooth functions with compact support, leading to standard distributions. 17. We first prove that the formula is true for test functions , there are densely many of them. 18. There are different possible choices for the space of test functions , leading to different spaces of distributions. 19. I ran the test function on both machines and both returned 0, meaning they are both Little Endian. 20. However, the latter is not a valid test function ( it is not even a proper function ).