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Signature (topology) In the field of topology, the signature is an integer invariant which is defined for an oriented manifold M of dimension divisible by four . This invariant of a manifold has been studied in detail, starting with Rokhlin's theorem for 4-manifolds, and Hirzebruch signature theorem .
Technosignature or technomarker is any measurable property or effect that provides scientific evidence of past or present technology. [1] [2] Technosignatures are analogous to biosignatures, which signal the presence of life, whether intelligent or not. [1] [3] Some authors prefer to exclude radio transmissions from the definition, [4] but such ...
Ring signature. In cryptography, a ring signature is a type of digital signature that can be performed by any member of a set of users that each have keys. Therefore, a message signed with a ring signature is endorsed by someone in a particular set of people. One of the security properties of a ring signature is that it should be ...
A links is the oldest style of golf course, first developed in Scotland. Links courses are generally built on sandy coastland that offers a firmer playing surface than parkland and heathland courses. Links courses are generally built on sandy coastland that offers a firmer playing surface than parkland and heathland courses.
A training tool within the framework of Wikipedia:Education creates discussions on Talk pages on behalf of student editors, and publishes a comment on the TP with a sig that is not the userid of the editor running the tool. There is a question as to whether this is compliant with the guideline, in particular, the policy section at ยง Signature ...
"The Black Page #1" is a piece by American composer Frank Zappa known for being extraordinarily difficult to play. Originally written for the drum kit and melodic percussion (as "The Black Page Drum Solo"), the piece was later rearranged in several versions, including the "easy teenage New York version" (commonly referred to as "The Black Page #2") and a so-called "new-age version", among others.
The UEFA Champions League (previously known as the European Cup, abbreviated as UCL, or sometimes, UEFA CL) is an annual club association football competition organised by the Union of European Football Associations (UEFA) and contested by top-division European clubs, deciding the competition winners through a round robin group stage to qualify for a double-legged knockout format, and a single ...
Fibonacci sequence. A tiling with squares whose side lengths are successive Fibonacci numbers: 1, 1, 2, 3, 5, 8, 13 and 21. In mathematics, the Fibonacci sequence is a sequence in which each number is the sum of the two preceding ones. Numbers that are part of the Fibonacci sequence are known as Fibonacci numbers, commonly denoted Fn .