Ash (1998) includes the following areas in his definition of abstract algebra: logic and foundations, counting, elementary number theory, informal set theory, linear algebra, and the theory of linear operators.
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But first, the details. Daylight saving time 2014 will begin at 2 a.m. on Sunday, March 9, when most U.S. states will spring forward an hour. Time will fall back to standard time again on Sunday, November 2, when DST ends. (See National Geographic's pictures of spring landscapes .).