physymb – As­sorted macros for Physi­cists

The pack­age con­tains a large col­lec­tion of small macros that may be use­ful to physi­cists and oc­ca­sion­ally some math­e­mati­cians. It stream­lines writ­ing Dirac no­ta­tion, deriva­tives, vec­tor vari­ables, unit vec­tors, sci­en­tific no­ta­tion, el­e­men­tary par­ti­cles, and many other things.