Equations


Partial Differential Equations (Graduate Studies in Mathematics)
Elementary Differential Equations and Boundary Value Problems
Stochastic Differential Equations: An Introduction with Applications (Universitext)
Elementary Applied Partial Differential Equations With Fourier Series and Boundary Value Problems (3rd Edition)
Ordinary Differential Equations
Advanced Mathematical Methods for Scientists and Engineers I: Asymptotic Methods and Perturbation Theory
Handbook of Differential Equations
Numerical Methods for Partial Differential Equations (Computer Science and Scientific Computing)
CHAOS: INTRO TO DYNAMIC SYSTEMS: . (Textbooks in Mathematical Sciences)
An Introduction to Difference Equations (Undergraduate Texts in Mathematics)
Introduction to Partial Differential Equations: A Computational Approach (Texts in Applied Mathematics, 29)
Semilinear Schrodinger Equations (Courant Lecture Notes In Mathematics)
Postmodern Analysis (Universitext)
Qualitative Theory of Planar Differential Systems (Universitext)
Dynamical Systems: Examples of Complex Behaviour (Universitext)
Psychological motivation is the desire to change relations between two points, and so psychology is the study of equations with two unbound variables. ("America: Three Audiences") ...more
William S. Wilson, Why I Don't Write Like Franz Kafka

Joseph Fourier
The integrals which we have obtained are not only general expressions which satisfy the differential equation, they represent in the most distinct manner the natural effect which is the object of the phenomenon... when this condition is fulfilled, the integral is, properly speaking, the equation of the phenomenon; it expresses clearly the character and progress of it, in the same manner as the finite equation of a line or curved surface makes known all the properties of those forms.
Jean-Baptiste-Joseph Fourier

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