Name a mathematician of each gender, if you can (without looking it up)

"I'm so tired."

If you are reading this, to name a mathematician, and then name one of the opposite gender, and leave it in the comment space for a small experiment a friend is doing. (If you already did this for Sachi/on Sheroes, skip it here, please.) And if you can't think of one or the other or either after some thought, just say that.