A theorem in mathematics is a true statement that has been rigorously proven and is considered noteworthy. They help us establish new and useful results.
Important theorems
Mathematics
- Squeeze theorem for certain undefined limits
- L’Hopital’s rule for limits of indeterminate forms
- Fundamental theorem of calculus that links differential and integral calculus
- De Moivre’s theorem for powers of polar-form complex numbers
- Spectral theorem for symmetric matrices
- Solutions to differential equations for solutions of differential equations
Engineering
- Thevenin and Norton’s theorem for equivalent electrical circuits
- Tellegen’s theorem for conservation of power in circuits