ACA'99 Session: Demos of Computer Algebra Systems Organizers Michael Wester (wester@math.unm.edu) & Winfried Neun (neun@zib.de) Description Appropriate to a conference on applications of computer algebra, this session will present live demonstrations of various computer algebra systems in which the presenter(s) will demonstrate features that make their favorite system unique and of interest to the user community. Such demonstrations would ideally involve presenting complete, but not too complicated series of examples, allowing time for audience requests as interest warrants. Features such as the user interface, expressiveness of the builtin language, system capabilities, speed of calculation, ease of use, ... are all important topics to note. Systems large and small, commercial and otherwise are all encouraged to particpate. The session will begin with an overview lecture.