check(ZZ,CongruenceOfCurves) -- check that a congruence of curves is well-defined

Synopsis

• Function: check

• Usage:

  check f

  check(n,f)

• Inputs:
  • n, an integer, (optional with default value 5)
  • f, a congruence of curves
• Optional inputs:
  • UserMode => ..., default value null,
  • Verbose => ..., default value false,
• Outputs:
  • a congruence of curves, the same object passed as input, but an error is thrown if the congruence fails when evaluated on n random points.