Combinatorics, or at least part of it, is the art of counting. For example: how many derangements does a set with n n elements have? A derangement is a bijection with no fixed points. We’ll count them ...

Learn how to explain complex ideas clearly and confidently with tips on clarity, empathy, and structure. Improve your ...

Key data is currently not available. Data Disclaimer: The Nasdaq Indices and the Major Indices are delayed at least 1 minute. *Data is provided by Barchart.com. Data reflects weightings calculated ...

The management of temporal complexity, structuring of dynamic real-time applications, object-oriented models, object-oriented real-time languages, and the requirements for real-time object-oriented ...

Ask the publishers to restore access to 500,000+ books. An icon used to represent a menu that can be toggled by interacting with this icon. A line drawing of the Internet Archive headquarters building ...