Resumen de Crosscap numbers of 2-bridge knots

Mikami Hirasawa, Masakazu Teragaito

• We present a practical algorithm to determine the minimal genus of non-orientable spanning surfaces for 2-bridge knots, called the crosscap numbers. We will exhibit a table of crosscap numbers of 2-bridge knots up to 12 crossings (all 362 of them).