View source for Talk:Canal surface

"On the contrary, if a regular curve..." — I suspect, "vice versa" is meant (or "conversely") rather than "on the contrary"; but being not a native English speaker I am not sure. By the way, [http://enc-dic.com/enc_math/Kanalovaja-poverhnost-1097.html the corresponding article in Russian] does not contain this part. [[User:Boris Tsirelson|Boris Tsirelson]] ([[User talk:Boris Tsirelson|talk]]) 20:38, 17 November 2017 (CET)
:I would have written "conversely", or, less formally, "on the other hand" or "in the opposite direction".  [[User:Richard Pinch|Richard Pinch]] ([[User talk:Richard Pinch|talk]]) 22:30, 17 November 2017 (CET)
::Nice; I did. [[User:Boris Tsirelson|Boris Tsirelson]] ([[User talk:Boris Tsirelson|talk]]) 23:29, 17 November 2017 (CET)