# Drawing curves without arrows using xy-pic

Could you tell me how to remove the arrows of the curves using xy-pic? I didn't find the solution in xy-guide. Thanks advance for your help.

• As @egreg had mentioned on deleted answer, use \ar@{-}. – Sigur Jun 4 '18 at 11:07
• Sorry i can only use it to draw a straight l. – gcfsjfcus Jun 4 '18 at 11:16
• As below, to curve, use @/^/ or @/_/ also. – Sigur Jun 4 '18 at 11:27
• ...it doesn't work. – gcfsjfcus Jun 4 '18 at 11:42

\documentclass{article}
$\xymatrix{ 1\ {\circ} \ar@{}@/^/[r] \ar@{}@/_/[r] & {\circ}\ 1 }$

• If I'm not wrong, @{} will make an invisible arrow, no draw pattern. – Sigur Jun 4 '18 at 13:16