Tag: Symmetric

Compactification of Symmetric Spaces


Free Download Compactification of Symmetric Spaces By Yves Guivarc’h, Lizhen Ji, J. C. Taylor (auth.)
1996 | 284 Pages | ISBN: 1461275423 | PDF | 7 MB
The concept of symmetric space is of central importance in many branches of mathematics. Compactifications of these spaces have been studied from the points of view of representation theory, geometry, and random walks. This work is devoted to the study of the interrelationships among these various compactifications and, in particular, focuses on the martin compactifications. It is the first exposition to treat compactifications of symmetric spaces systematically and to uniformized the various points of view.Key features:* definition and detailed analysis of the Martin compactifications* new geometric Compactification, defined in terms of the Tits building, that coincides with the Martin Compactification at the bottom of the positive spectrum.* geometric, non-inductive, description of the Karpelevic Compactification* study of the well-know isomorphism between the Satake compactifications and the Furstenberg compactifications* systematic and clear progression of topics from geometry to analysis, and finally to random walksThe work is largely self-contained, with comprehensive references to the literature. It is an excellent resource for both researchers and graduate students.

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Symmetric Cryptography Essential Training (2024)


Free Download Symmetric Cryptography Essential Training (2024)
Released 10/2024
MP4 | Video: h264, 1280×720 | Audio: AAC, 44.1 KHz, 2 Ch
Skill Level: Beginner | Genre: eLearning | Language: English + srt | Duration: 2h 9m | Size: 252 MB
If you work with computers, you use cryptography. Symmetric cryptography is a common method that uses the same key for encryption and decryption of data. Faster and less resource-intensive than asymmetric cryptography, symmetric cryptography is important for all IT professionals to understand. This course delivers a practical overview of the technology, emphasizing high-level concepts that affect how our data is stored and transmitted. Jeremy Hansen explains the difference between single key (symmetric) and multiple key (asymmetric) algorithms, and shows how symmetric encryption affects underlying binary data. Learn about the basic ciphers used in symmetric cryptography, including substitution, permutation, and transposition, and influential symmetric-key algorithms like the Advanced Encryption Standard and its predecessor, the Data Encryption Standard. Review modern block cipher modes like cipher block chaining (CBC), cipher feedback (CFB), and counter (CTR), which can help secure large amounts of data.

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