Template for American Physical Society (APS) and American Institute of Physics (AIP) journals, including Physical Review Letters, Physical Review A-E, Physical Review X, Reviews of Modern Physics, Applied Phyiscs Letters, using the ReVTeX 4.2 document class.
This is the template for DAM (discrete and argumentative mathematics).
We prove theorem $2.1$ using the method of proof by way of contradiction. This theorem states that for any set $A$, that in fact the empty set is a subset of $A$, that is $\emptyset \subset A$.
This template is for authors who are preparing a manuscript for a Taylor & Francis journal using the LaTeX document preparation system and the interact class file, which is available via selected journals' home pages on the Taylor & Francis website.