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Bertrand is a programming language built for scientific computing. The language, developed at Sandia National Laboratories, aims to provide the performance of Fortran with the ease of use typical of MATLAB and Python. Bertrand features linear algebraic operations along with array-handling capabilities similar to those in APL or J. The language also incorporates domain-specific constructs for specifying mathematical models directly, without needing an intermediate representation such as ODEs (ordinary differential equations). Its syntax focuses on clean presentation and usability for both symbolic and number-crunching simulations, aimed at making it easier for non-computer scientists – such as mathematicians and engineers – to express their work programmatically.