UTC The preceding bunch of comments by 24 5 make me laugh I m a professional mathematician and even have a significant result in mathematical physics I also am often frustrated when these physics articles are badly written and don t define their terms not even in blue I constantly hammer on about it either complaining or fixing depending on my knowledge of it Yet at the same time I strongly recommend following those 5 blue links and reading those 10 or 15 articles You ll range from the dot product to nuclear spaces It s the only way 89 217 26 179 07 52 28 April 2015