This letter is submitted in response to the request of the Securities and Exchange Commission (the "Commission" or "SEC") for comments on the Concept Release on Equity Market Structure (the "Concept Release,,).l The undersigned firms engage, or have affiliates that engage, in automated trading on a proprietary basis and are interested in the inquiry being conducted by the Commission with respec...

In November 1994 we (members of the former Human Cognition Research Laboratory) ran an experimental version of the Masters level course DM863, ‘Common Lisp for Artificial Intelligence,’ taught as far as possible entirely through the Internet. This report describes this course and outlines some of the experiences and ideas that evolved during this course. Introduction The intention behind this c...

The security of electronic mail sent through the Internet may be described in exactly three words: there is none. The Privacy and Security Research Group has recommended implementing mechanisms designed to provide security enhancements. The first set of mechanisms provides a protocol to provide privacy, integrity, and authentication for electronic mail; the second provides a certificate-based k...

In this paper we describe our distributed implementation of two factoring algorithms. the elliptic curve method (ecm) and the multiple polynomial quadratic sieve algorithm (mpqs). Since the summer of 1987. our erm-implementation on a network of MicroVAX processors at DEC’s Systems Research Center has factored several most and more wanted numbers from the Cunningham project. In the summer of 198...