least action, principle of
The principle of least action states that a trajectory of the dynamical system is an actual motion of the system if and only if the value of S is a stationary value. See also calculus of variations.
- ray
- Re
- reachable set
- reaction
- real
- real axis
- real function
- realism
- real line
- real number
- real part
- real projective plane
- real world
- rearrangement
- reciprocal
- rectangle
- rectangular
- rectangular distribution
- rectangular hyperbola
- rectangular number
- rectilinear motion
- recurrence relation
- recurrent
- recurring decimal
- recursion theory