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  2. List of axioms - Wikipedia

    en.wikipedia.org/wiki/List_of_axioms

    Together with the axiom of choice (see below), these are the de facto standard axioms for contemporary mathematics or set theory. They can be easily adapted to analogous theories, such as mereology. Axiom of extensionality; Axiom of empty set; Axiom of pairing; Axiom of union; Axiom of infinity; Axiom schema of replacement; Axiom of power set ...

  3. List of open-source software for mathematics - Wikipedia

    en.wikipedia.org/wiki/List_of_open-source...

    Axiom is a general-purpose CAS. It has been in development since 1971 by IBM, and was originally named scratchpad. Richard Jenks originally headed it but over the years Barry Trager who then shaped the direction of the scratchpad project took over the project. It was eventually sold to the Numerical Algorithms Group (NAG) and

  4. Axiom - Wikipedia

    en.wikipedia.org/wiki/Axiom

    An axiom, postulate, or assumption is a statement that is taken to be true, to serve as a premise or starting point for further reasoning and arguments. The word comes from the Ancient Greek word ἀξίωμα (axíōma), meaning 'that which is thought worthy or fit' or 'that which commends itself as evident'.

  5. Computer algebra system - Wikipedia

    en.wikipedia.org/wiki/Computer_algebra_system

    APIs for linking it on an external program such as a database, or using in a programming language to use the computer algebra system; string manipulation such as matching and searching; add-ons for use in applied mathematics such as physics, bioinformatics, computational chemistry and packages for physical computation [7]

  6. Axiomatic system - Wikipedia

    en.wikipedia.org/wiki/Axiomatic_system

    An axiomatic system is said to be consistent if it lacks contradiction.That is, it is impossible to derive both a statement and its negation from the system's axioms. Consistency is a key requirement for most axiomatic systems, as the presence of contradiction would allow any statement to be proven (principle of explo

  7. Explicit and implicit methods - Wikipedia

    en.wikipedia.org/wiki/Explicit_and_implicit_methods

    For such problems, to achieve given accuracy, it takes much less computational time to use an implicit method with larger time steps, even taking into account that one needs to solve an equation of the form (1) at each time step. That said, whether one should use an explicit or implicit method depends upon the problem to be solved.

  8. COSMO-RS - Wikipedia

    en.wikipedia.org/wiki/COSMO-RS

    COSMO-RS (short for COnductor like Screening MOdel for Real Solvents) [1] [2] [3] is a quantum chemistry based equilibrium thermodynamics method with the purpose of predicting chemical potentials μ in liquids. It processes the screening charge density σ on the surface of molecules to calculate the chemical potential μ of each species in ...

  9. Extent of reaction - Wikipedia

    en.wikipedia.org/wiki/Extent_of_reaction

    However, the extent of reaction can be used to describe the changes on a common footing as needed. The change of the number of moles of A can be represented by the equation d n A = − d ξ {\displaystyle dn_{A}=-d\xi } , the change of B is d n B = + 2 d ξ {\displaystyle dn_{B}=+2d\xi } , and the change of C is d n C = + 3 d ξ {\displaystyle ...