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1 dzień temu · This non-commutativity has some unexpected consequences, among them that a polynomial equation over the quaternions can have more distinct solutions than the degree of the polynomial. For example, the equation z 2 + 1 = 0, has infinitely many quaternion solutions, which are the quaternions z = b i + c j + d k such that b 2 + c 2 + d 2 = 1.
1 dzień temu · t. e. In physics, the special theory of relativity, or special relativity for short, is a scientific theory of the relationship between space and time. In Albert Einstein 's 1905 treatment, the theory is presented as being based on just two postulates: [p 1] [1] [2] The laws of physics are invariant (identical) in all inertial frames of ...
1 dzień temu · Chersky. Dmitry Anuchin, anthropologist and geographer, coined the term anthroposphere, determined the location of the Volga river source; Karl Baer, naturalist, formulated the geological Baer's law on river erosion, co-founder of the Russian Geographical Society; Lev Berg, determined the depth of Central Asian lakes, including Balkhash and Issyk Kul, a head of the Soviet Geographical Society
