Brian Josephson: 80th Birthday

Professor Vladimír Bencko Celebrates 80th Birthday.

In Honor of Marvin Minsky's Contributions on his 80th Birthday

ficial intelligence and professor at MIT, celebrated his 80th birthday on August 9, 2007. This article seizes an opportune time to honor Marvin and his contributions and influence in artificial intelligence, science, and beyond. The article provides readers with some personal insights of Minsky from Danny Hillis, John McCarthy, Tom Mitchell, Erik Mueller, Doug Riecken, Aaron Sloman, and Patrick...

Conference on the Occasion of Richard Varga’s 80th Birthday

Bernstein’s inequality for Legendre polynomials Pn, as generalized by Baratella, Chow, Gatteschi, and Wong to Jacobi polynomials P n , (α, β) ∈ calR1/2 = {|α| ≤ 1/2, |β| ≤ 1/2}, is analyzed analytically and computationally with regard to validity and sharpness in larger domains Rs = {−1/2 ≤ α ≤ s,−1/2 ≤ β ≤ s}, s > 1/2. Title: Bivariate B-splines used as basis functions for data fitting Speaker...

On John McCarthy's 80th Birthday, in Honor of His Contributions

ence and artificial intelligence are legendary. He invented Lisp, made substantial contributions to early work in timesharing and the theory of computation, and was one of the founders of artificial intelligence and knowledge representation. This article, written in honor of McCarthy’s 80th birthday, presents a brief biography, an overview of the major themes of his research, and a discussion o...

Counting Lines and Conics on a Surface Dedicated to Professor Friedrich Hirzebruch on his 80th birthday

Proposition B. Let X ⊂ P C be a canonically embedded surface of degree K and put σ = c2/K ≥ 1/3 (as usual, K and c2 stand for the canonical divisor and the topological Euler number of X). Let rd = rd(X) be the number of rational curves of degree d on X and let s = s(X) ∈ Z≥0 ∪ {∞} denote the sum ∑ C KC of the degrees of the elliptic curves C ⊂ X. (1) Assume that σ < 1 + 4 N + 6 N2 for some posi...