This man proved that arctan of one-half plus arctan of one-third equals pi over four, and was one of two people who found continued fraction expressions for the arctangent.
This man proved that arctan of one-half plus arctan of one-third equals pi over four, and was one of two people who found continued fraction expressions for the arctangent. This mathematician solved one problem by observing that all but two of the nodes in a certain graph must have an even number of edges. A formula named for him relates the complex exponential function to cosine and sine, and when phi equals pi, that formula gives that the exponential of i pi plus one equals 0. This man pioneered graph theory by solving the Seven Bridges of Konigsburg problem. For 10 points, name this Swiss mathematician who introduced a constant equal to about 2.718 and written e.
This man proved that arctan of one-half plus arctan of one-third equals pi over four, and was one of two people who found continued fraction expressions for the arctangent.
Leonhard Euler