"Source: Text/Geometry/GrpPSL2.text";
"Line: 1580";
"Date: Tue Jun  7 22:27:14 2016";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/Geometry/GrpPSL2.text, line: 1580
// Example: H142E10 ()
print "Example: H142E10";
ei := GetEchoInput();
SetEchoInput(true);
G := CongruenceSubgroup(5);
FS := FareySymbol(G);
FS;
// The following command graphically displays the information contained in FS:
// This picture represents a modular curve with genus 0:
Genus(G);
assert $1 eq 0;
SetEchoInput(ei);
