Noam D. Elkies On the Sums £gL-oo(4K + 1) 561 Daniel K. Biss Which Functor Is the Projective Line? 574 Jerry Lodder Curvature in the Calculus Curriculum 593 Guershon Harel Polygons Whose Vertex Triangles Have 606
Jeffrey M. Rabin Equal Area NOTES
Harm Derksen The Fundamental Theorem of Algebra 620 and Linear Algebra
Charles Thas Projective Generalizations of Two Points 624 of Concurrence on the Nine-Point Circle
Ulrich Abel On the Lagrange Remainder of the 627 Taylor Formula
Jussi Vaisala A Proof of the Mazur-Ulam Theorem 633 PROBLEMS AND 636
SOLUTIONS REVIEWS
John H. Hubbard Indra's Pearls: The Vision of Felix Klein. 644 By David Mumford, Caroline Series, and
David Wright
Marion D. Cohen Conversations with a Mathematician: Math, 650 Art, Science and the Limits of Reason.
By Gregory]. Chaitin
Ranjan Roy Quantum Calculus. By Victor Kac and 652 Pokman Cheung
TELEGRAPHIC 658 REVIEWS
