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  2. Proportionality (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Proportionality_(mathematics)

    Hence the constant "k" is the product of x and y. The graph of two variables varying inversely on the Cartesian coordinate plane is a rectangular hyperbola. The product of the x and y values of each point on the curve equals the constant of proportionality (k). Since neither x nor y can equal zero (because k is non-zero), the graph never ...

  3. Hooke's law - Wikipedia

    en.wikipedia.org/wiki/Hooke's_law

    In physics, Hooke's law is an empirical law which states that the force (F) needed to extend or compress a spring by some distance (x) scales linearly with respect to that distance—that is, F s = kx, where k is a constant factor characteristic of the spring (i.e., its stiffness), and x is small compared to the total possible deformation of the spring.

  4. Velar ejective affricate - Wikipedia

    en.wikipedia.org/wiki/Velar_ejective_affricate

    The velar ejective affricate is a type of consonantal sound, used in some spoken languages.The symbol in the International Phonetic Alphabet that represents this sound is kxʼ .

  5. Linear equation - Wikipedia

    en.wikipedia.org/wiki/Linear_equation

    A non-vertical line can be defined by its slope m, and its y-intercept y 0 (the y coordinate of its intersection with the y-axis). In this case, its linear equation can be written = +. If, moreover, the line is not horizontal, it can be defined by its slope and its x-intercept x 0. In this case, its equation can be written

  6. Polynomial ring - Wikipedia

    en.wikipedia.org/wiki/Polynomial_ring

    If K is a commutative ring, the polynomial ring K[X 1, …, X n] has the following universal property: for every commutative K-algebra A, and every n-tuple (x 1, …, x n) of elements of A, there is a unique algebra homomorphism from K[X 1, …, X n] to A that maps each to the corresponding .

  7. Phase velocity - Wikipedia

    en.wikipedia.org/wiki/Phase_velocity

    We want to see how fast a particular phase of the wave travels. For example, we can choose kx - ωt = 0, the phase of the first crest. This implies kx = ωt, and so v = x / t = ω / k. Formally, we let the phase φ = kx - ωt and see immediately that ω = -dφ / dt and k = dφ / dx. So, it immediately follows that

  8. Fixed-point combinator - Wikipedia

    en.wikipedia.org/wiki/Fixed-point_combinator

    The Y combinator may also be used in implementing Curry's paradox. The heart of Curry's paradox is that untyped lambda calculus is unsound as a deductive system, and the Y combinator demonstrates this by allowing an anonymous expression to represent zero, or even many values. This is inconsistent in mathematical logic.

  9. List of acronyms: K - Wikipedia

    en.wikipedia.org/wiki/List_of_acronyms:_K

    This list contains acronyms, initialisms, and pseudo-blends that begin with the letter K. For the purposes of this list: acronym = an abbreviation pronounced as if it were a word, e.g., SARS = severe acute respiratory syndrome , pronounced to rhyme with cars