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  2. AVL tree - Wikipedia

    en.wikipedia.org/wiki/AVL_tree

    It depends on the balance factor of the sibling Z (the higher child tree in figure 2) whether the height of the subtree decreases by one –and the retracing needs to continue– or does not change (if Z has the balance factor 0) and the whole tree is in AVL-shape.

  3. Nash equilibrium - Wikipedia

    en.wikipedia.org/wiki/Nash_equilibrium

    The key to Nash's ability to prove existence far more generally than von Neumann lay in his definition of equilibrium. According to Nash, "an equilibrium point is an n-tuple such that each player's mixed strategy maximizes [their] payoff if the strategies of the others are held fixed.

  4. Deposit account - Wikipedia

    en.wikipedia.org/wiki/Deposit_account

    A deposit account that allows for the withdrawal of funds without penalty but requires a higher minimum balance to earn interest. [1] 6 Sweep account: A deposit account in which amounts over a certain balance are automatically transferred to another account pursuant to a pre-determined set of arrangements. 7 Automatic transfer service account

  5. Pattern day trader - Wikipedia

    en.wikipedia.org/wiki/Pattern_day_trader

    A pattern day trader is subject to special rules. The main rule is that in order to engage in pattern day trading you must maintain an equity balance of at least $25,000 in a margin account. The required minimum equity must be in the account prior to any day trading activities.

  6. Fluid balance - Wikipedia

    en.wikipedia.org/wiki/Fluid_balance

    Fluid balance is an aspect of the homeostasis of organisms in which the amount of water in the organism needs to be controlled, via osmoregulation and behavior, such that the concentrations of electrolytes (salts in solution) in the various body fluids are kept within healthy ranges.

  7. Resonance - Wikipedia

    en.wikipedia.org/wiki/Resonance

    Electrical resonance occurs in an electric circuit at a particular resonant frequency when the impedance of the circuit is at a minimum in a series circuit or at maximum in a parallel circuit (usually when the transfer function peaks in absolute value). Resonance in circuits are used for both transmitting and receiving wireless communications ...

  8. Zero-fuel weight - Wikipedia

    en.wikipedia.org/wiki/Zero-fuel_weight

    The maximum zero fuel weight (MZFW) is the maximum weight allowed before usable fuel and other specified usable agents (engine injection fluid, and other consumable propulsion agents) are loaded in defined sections of the aircraft as limited by strength and airworthiness requirements.

  9. B-tree - Wikipedia

    en.wikipedia.org/wiki/B-tree

    Depth only increases when the root is split, maintaining balance. Similarly, a B-tree is kept balanced after deletion by merging or redistributing keys among siblings to maintain the -key minimum for non-root nodes. A merger reduces the number of keys in the parent potentially forcing it to merge or redistribute keys with its siblings, and so on.