- Look up
perturbation or
perturb in Wiktionary, the free dictionary.
Perturbation or
perturb may
refer to:
Perturbation theory,
mathematical methods that...
- In
mathematics and
applied mathematics,
perturbation theory comprises methods for
finding an
approximate solution to a problem, by
starting from the exact...
- In
quantum mechanics,
perturbation theory is a set of
approximation schemes directly related to
mathematical perturbation for
describing a complicated...
-
Phase perturbation is the shifting, from
whatever cause, in the
phase of an
electronic signal. The
shifting is
often quite rapid, and may
appear to be...
- In mathematics, an
eigenvalue perturbation problem is that of
finding the
eigenvectors and
eigenvalues of a
system A x = λ x {\displaystyle Ax=\lambda...
- In mathematics, a
singular perturbation problem is a
problem containing a
small parameter that
cannot be
approximated by
setting the
parameter value to...
-
cosmological perturbation theory is the
theory by
which the
evolution of
structure is
understood in the Big Bang model.
Cosmological perturbation theory may...
- In astronomy,
perturbation is the
complex motion of a m****ive body
subjected to
forces other than the
gravitational attraction of a
single other m****ive...
- Møller–Plesset
perturbation theory (MP) is one of
several quantum chemistry post-Hartree–Fock ab
initio methods in the
field of com****tional chemistry...
-
Parapsychology is the
study of
alleged psychic phenomena (extrasensory perception, telepathy, precognition, clairvoyance,
psychokinesis (also
called telekinesis)...
