Editing 1915 in science (section)

==Mathematics==
* [[Emmy Noether]] proves [[Noether's theorem|her theorem]] that any [[derivative|differentiable]] [[Symmetry in physics|symmetry]] of the [[action (physics)|action]] of a physical system has a corresponding [[Conservation law (physics)|conservation law]].<ref>{{cite journal|last=Noether|first=E.|year=1918|title=Invariante Variationsprobleme|journal=Nachrichten von der Königliche Gesellschaft der Wissenschaften zu Göttingen. Mathematisch-Physikalische Klasse|volume=1918|pages=235–257}} Reprinted in: {{cite journal|author1=Noether, Emmy|author2=Tavel|year=1971|title=Invariant Variation Problems|journal=Transport Theory and Statistical Physics|volume=1|issue=3|pages=186–207|arxiv=physics/0503066|doi=10.1080/00411457108231446|bibcode = 1971TTSP....1..186N|s2cid=119019843}}</ref>
* [[Wacław Sierpiński]] describes the [[Sierpinski triangle]].