Chapter 6
Mathematical functions and operations

 6.1 Operations
  6.1.1 Usual operations
  6.1.2 Logic operations
  6.1.3 Comparisons
  6.1.4 Intersection operations
  6.1.5 Cut operation
 6.2 The predefined mathematical functions
  6.2.1 abs
  6.2.2 arccos, arccsin, arctan, arccot
  6.2.3 Arg
  6.2.4 argch, argsh, argth, argcth
  6.2.5 bar
  6.2.6 ch, cos
  6.2.7 Ent
  6.2.8 exp
  6.2.9 Im
  6.2.10 ln
  6.2.11 M
  6.2.12 opp
  6.2.13 Rand
  6.2.14 Re
  6.2.15 Round
  6.2.16 sh, sin
  6.2.17 sqr
  6.2.18 sqrt
  6.2.19 tan, th, cot, cth