Search results
Results from the WOW.Com Content Network
[1] [7] [8] According to this account, at the end of Hồng Bàng dynasty, there was a kingdom called Nam Cương (lit. "southern border") in modern-day Cao Bằng and Guangxi. [1] This was a confederation of 10 mườngs, in which the King resided in the central one (present-day Cao Bằng Province). The other nine regions were under the ...
A Logarex system Darmstadt slide rule with 7 and 6 on A and B scales, and square roots of 6 and of 7 on C and D scales, which can be read as slightly less than 2.45 and somewhat more than 2.64, respectively. The square root of 7 is the positive real number that, when multiplied by itself, gives the prime number 7.
7 is the only number D for which the equation 2 n − D = x 2 has more than two solutions for n and x natural. In particular, the equation 2 n − 7 = x 2 is known as the Ramanujan–Nagell equation . 7 is one of seven numbers in the positive definite quadratic integer matrix representative of all odd numbers: {1, 3, 5, 7, 11, 15, 33}.
When q ≠ 2, the group is simple, and when q = 2, it has a simple subgroup of index 2 isomorphic to 2 A 2 (3 2), and is the automorphism group of a maximal order of the octonions. The Janko group J 1 was first constructed as a subgroup of G 2 (11). Ree (1960) introduced twisted Ree groups 2 G 2 (q) of order q 3 (q 3 + 1)(q − 1) for q = 3 2n ...