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  2. Table of keyboard shortcuts - Wikipedia

    en.wikipedia.org/wiki/Table_of_keyboard_shortcuts

    Alt+F8 then Arrow Keys / Alt+Right Mouse Button [notes 11] Ctrl+x, then ^ vertically Alt+] (snap window to right half of screen), Alt+[(snap window to left half of screen) Keep window always on top Ctrl+Alt+Esc (toggles on/off) Hide the focused window ⌘ Cmd+H: Meta+x, then bury-buffer, then ↵ Enter: Hide all except the focused window ⌘ ...

  3. Control key - Wikipedia

    en.wikipedia.org/wiki/Control_key

    The Control key is located on or near the bottom left side of most keyboards (in accordance with the international standard ISO/IEC 9995-2), with many featuring an additional one at the bottom right. On keyboards that use English abbreviations for key labeling, it is usually labeled Ctrl ( Control or Ctl are sometimes used, but it is uncommon).

  4. Riemann sum - Wikipedia

    en.wikipedia.org/wiki/Riemann_sum

    Loosely speaking, a function is Riemann integrable if all Riemann sums converge as the partition "gets finer and finer". While not derived as a Riemann sum, taking the average of the left and right Riemann sums is the trapezoidal rule and gives a trapezoidal sum. It is one of the simplest of a very general way of approximating integrals using ...

  5. Inverse function - Wikipedia

    en.wikipedia.org/wiki/Inverse_function

    A function has a two-sided inverse if and only if it is bijective. A bijective function f is injective, so it has a left inverse (if f is the empty function, : is its own left inverse). f is surjective, so it has a right inverse. By the above, the left and right inverse are the same.

  6. Order of operations - Wikipedia

    en.wikipedia.org/wiki/Order_of_operations

    Calculators generally perform operations with the same precedence from left to right, [1] but some programming languages and calculators adopt different conventions. For example, multiplication is granted a higher precedence than addition, and it has been this way since the introduction of modern algebraic notation .

  7. Continuous function - Wikipedia

    en.wikipedia.org/wiki/Continuous_function

    Discontinuous functions may be discontinuous in a restricted way, giving rise to the concept of directional continuity (or right and left continuous functions) and semi-continuity. Roughly speaking, a function is right-continuous if no jump occurs when the limit point is approached from the right.

  8. Fold (higher-order function) - Wikipedia

    en.wikipedia.org/wiki/Fold_(higher-order_function)

    These pictures illustrate right and left fold of a list visually. They also highlight the fact that foldr (:) [] is the identity function on lists (a shallow copy in Lisp parlance), as replacing cons with cons and nil with nil will not change the result. The left fold diagram suggests an easy way to reverse a list, foldl (flip (:)) []. Note ...

  9. Arrow keys - Wikipedia

    en.wikipedia.org/wiki/Arrow_keys

    This variant adopted to newer games using mouse-look doesn't really need worry about the turn left and turn right keys. Instead S = strafe left, D = strafe right, A = backpedal, and space or F = forward. This is a more natural feel on the keyboard as your fingers rest on the home row. The comfort and usability points from ESDF apply here.