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  2. Derivative code - Wikipedia

    en.wikipedia.org/wiki/Derivative_code

    The following procedure can be used to easily test if any source code is derivative code or not. Delete the code in question; Build (or compile) the project; If the build process simply replaces the source code which has been deleted, it is (obviously) code which has been derived from something else and is therefore, by definition, derivative code.

  3. Exponential integrator - Wikipedia

    en.wikipedia.org/wiki/Exponential_integrator

    Here, refers to the partial derivative of with respect to (the Jacobian of f). Exact integration of this problem from time 0 to a later time t {\displaystyle t} can be performed using matrix exponentials to define an integral equation for the exact solution: [ 3 ]

  4. Automatic differentiation - Wikipedia

    en.wikipedia.org/wiki/Automatic_differentiation

    The source code for a function is replaced by an automatically generated source code that includes statements for calculating the derivatives interleaved with the original instructions. Source code transformation can be implemented for all programming languages, and it is also easier for the compiler to do compile time optimizations.

  5. Numerical differentiation - Wikipedia

    en.wikipedia.org/wiki/Numerical_differentiation

    The classical finite-difference approximations for numerical differentiation are ill-conditioned. However, if is a holomorphic function, real-valued on the real line, which can be evaluated at points in the complex plane near , then there are stable methods.

  6. Finite difference methods for option pricing - Wikipedia

    en.wikipedia.org/wiki/Finite_difference_methods...

    The approach arises since the evolution of the option value can be modelled via a partial differential equation (PDE), as a function of (at least) time and price of underlying; see for example the Black–Scholes PDE. Once in this form, a finite difference model can be derived, and the valuation obtained. [2]

  7. Differentiable programming - Wikipedia

    en.wikipedia.org/wiki/Differentiable_programming

    A limitation of earlier approaches is that they are only able to differentiate code written in a suitable manner for the framework, limiting their interoperability with other programs. Newer approaches resolve this issue by constructing the graph from the language's syntax or IR, allowing arbitrary code to be differentiated. [7] [9]

  8. How long will flags be at half-staff? Here's what to know ...

    www.aol.com/news/long-flags-half-staff-heres...

    President Joe Biden ordered a national day of mourning in January and flags to be displayed at half-staff following President Jimmy Carter's death.

  9. Differential calculus - Wikipedia

    en.wikipedia.org/wiki/Differential_calculus

    The derivative of () at the point = is the slope of the tangent to (, ()). [3] In order to gain an intuition for this, one must first be familiar with finding the slope of a linear equation, written in the form = +. The slope of an equation is its steepness.