COPYING,LICENSE: add them (AGPL-3.0+)

[mjotex.git] / mjo-set.tex

diff --git a/mjo-set.tex b/mjo-set.tex
index 2134e640c51d7edfb62d8cdef726efe39bde7922..66cd56b1de39a39ed6150ade33c2bacd590d278c 100644 (file)
--- a/mjo-set.tex
+++ b/mjo-set.tex
@@ -15,6 +15,15 @@
   \usepackage{mathtools}
 \fi
 
+% Create a set from the given elements
+\newcommand*{\set}[1]{\left\lbrace{#1}\right\rbrace}
+
+% A set comprehension, where the ``such that...'' bar is added
+% automatically. The bar was chosen over a colon to avoid ambiguity
+% with the L : V -> V notation. We can't leverage \set here because \middle
+% needs \left and \right present.
+\newcommand*{\setc}[2]{\left\lbrace{#1}\ \middle|\ {#2}\right\rbrace}
+
 
 % The cardinality of a set. The |X| notation conflicts with the
 % absolute value, and the meaning of card(X) is clear at once, so we