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  2. Cross-multiplication - Wikipedia

    en.wikipedia.org/wiki/Cross-multiplication

    In mathematics, specifically in elementary arithmetic and elementary algebra, given an equation between two fractions or rational expressions, one can cross-multiply to simplify the equation or determine the value of a variable. The method is also occasionally known as the "cross your heart" method because lines resembling a heart outline can ...

  3. Criss-cross algorithm - Wikipedia

    en.wikipedia.org/wiki/Criss-cross_algorithm

    The criss-cross algorithm visits all 8 corners of the Klee–Minty cube in the worst case. It visits 3 additional corners on average. The Klee–Minty cube is a perturbation of the cube shown here. In mathematical optimization, the criss-cross algorithm is any of a family of algorithms for linear programming.

  4. Computational complexity of mathematical operations - Wikipedia

    en.wikipedia.org/wiki/Computational_complexity...

    The complexity of an elementary function is equivalent to that of its inverse, since all elementary functions are analytic and hence invertible by means of Newton's method. In particular, if either exp {\displaystyle \exp } or log {\displaystyle \log } in the complex domain can be computed with some complexity, then that complexity is ...

  5. Multiplication algorithm - Wikipedia

    en.wikipedia.org/wiki/Multiplication_algorithm

    Another method of multiplication is called Toom–Cook or Toom-3. The Toom–Cook method splits each number to be multiplied into multiple parts. The Toom–Cook method is one of the generalizations of the Karatsuba method. A three-way Toom–Cook can do a size-3N multiplication for the cost of five size-N multiplications. This accelerates the ...

  6. Cross-correlation - Wikipedia

    en.wikipedia.org/wiki/Cross-correlation

    If each of and is a scalar random variable which is realized repeatedly in a time series, then the correlations of the various temporal instances of are known as autocorrelations of , and the cross-correlations of with across time are temporal cross-correlations. In probability and statistics, the definition of correlation always includes a ...

  7. 5 festive NYC hotels where you can get into the holiday spirit

    www.aol.com/nyc-hotels-holiday-season-festive...

    At the Park Terrace Hotel (18 W. 40th St.), guests are known to cozy up at the hotel bar to get into the festive spirit. “I’ve heard guests say they could sit and watch this tree all day: it ...

  8. Matrix multiplication algorithm - Wikipedia

    en.wikipedia.org/wiki/Matrix_multiplication...

    Matrix multiplication completed in 2n-1 steps for two n×n matrices on a cross-wired mesh. There are a variety of algorithms for multiplication on meshes . For multiplication of two n × n on a standard two-dimensional mesh using the 2D Cannon's algorithm , one can complete the multiplication in 3 n -2 steps although this is reduced to half ...

  9. These are the 20 best Cyber Monday deals under $100 at Walmart

    www.aol.com/lifestyle/these-are-the-best-cyber...

    We've collected our favorite Walmart deals under $100 this Cyber Monday. Save on tablets, headphones, clothing, and more.