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  2. Locard's exchange principle - Wikipedia

    en.wikipedia.org/wiki/Locard's_exchange_principle

    The case studies below show how prevalent Locard's Exchange Principle is in each and every crime. [citation needed] The examples using Locard's Principle show not only how the transfer of trace evidence can tell the tale of what happened, [citation needed] [dubious – discuss] but also how much care is required when collecting and evaluating trace evidence.

  3. Debits and credits - Wikipedia

    en.wikipedia.org/wiki/Debits_and_credits

    t. e. Debits and credits in double-entry bookkeeping are entries made in account ledgers to record changes in value resulting from business transactions. A debit entry in an account represents a transfer of value to that account, and a credit entry represents a transfer from the account. [1] [2] Each transaction transfers value from credited ...

  4. Conditional (computer programming) - Wikipedia

    en.wikipedia.org/wiki/Conditional_(computer...

    In computer science, conditionals (that is, conditional statements, conditional expressions and conditional constructs) are programming language commands for handling decisions. Specifically, conditionals perform different computations or actions depending on whether a programmer-defined Boolean condition evaluates to true or false. In terms of ...

  5. Principal value - Wikipedia

    en.wikipedia.org/wiki/Principal_value

    Principal value. In mathematics, specifically complex analysis, the principal values of a multivalued function are the values along one chosen branch of that function, so that it is single-valued. A simple case arises in taking the square root of a positive real number. For example, 4 has two square roots: 2 and −2; of these the positive root ...

  6. Complex logarithm - Wikipedia

    en.wikipedia.org/wiki/Complex_logarithm

    instead. In developing the analogue for the complex logarithm, there is an additional complication: the definition of the complex integral requires a choice of path. . Fortunately, if the integrand is holomorphic, then the value of the integral is unchanged by deforming the path (while holding the endpoints fixed), and in a simply connected region (a region with "no holes"), any path from to ...

  7. Principal–agent problem - Wikipedia

    en.wikipedia.org/wiki/Principal–agent_problem

    The principal–agent problem refers to the conflict in interests and priorities that arises when one person or entity (the "agent") takes actions on behalf of another person or entity (the "principal"). [1] The problem worsens when there is a greater discrepancy of interests and information between the principal and agent, as well as when the ...

  8. Principal axis theorem - Wikipedia

    en.wikipedia.org/wiki/Principal_axis_theorem

    Mathematically, the principal axis theorem is a generalization of the method of completing the square from elementary algebra. In linear algebra and functional analysis, the principal axis theorem is a geometrical counterpart of the spectral theorem. It has applications to the statistics of principal components analysis and the singular value ...

  9. Alphabetic principle - Wikipedia

    en.wikipedia.org/wiki/Alphabetic_principle

    t. e. According to the alphabetic principle, letters and combinations of letters are the symbols used to represent the speech sounds of a language based on systematic and predictable relationships between written letters, symbols, and spoken words. The alphabetic principle is the foundation of any alphabetic writing system (such as the English ...