Fixed-point subring

（重定向自Fixed field）

In algebra, the fixed-point subring $R^{f}$ of an automorphism f of a ring R is the subring of the fixed points of f:

More generally, if G is a group acting on R, then the subring of R:

is called the fixed subring or, more traditionally, the ring of invariants. In Galois theory, when R is a field and G is a group of field automorphisms, the fixed ring is a subfield called the fixed field of the automorphism group; see Fundamental theorem of Galois theory.

单词	Fixed field
释义	Fixed field 英语百科 Fixed-point subring （重定向自Fixed field） In algebra, the fixed-point subring $R^{f}$ of an automorphism f of a ring R is the subring of the fixed points of f: More generally, if G is a group acting on R, then the subring of R: is called the fixed subring or, more traditionally, the ring of invariants. In Galois theory, when R is a field and G is a group of field automorphisms, the fixed ring is a subfield called the fixed field of the automorphism group; see Fundamental theorem of Galois theory.
随便看	pelvicephalograph的意思 pelvicephalography的意思 pelvicephalometer的意思 pelvicephalometr的意思 pelvicephalometry的意思 Pelvic evisceration的意思 Pelvic examination的意思 pelvic examination under anesthesia的意思 Pelvic examination under general anesthesia的意思 Pelvic Exenteration的意思 pelvic exenteration,anterior的意思 pelvic exenteration,posterior的意思 Pelvic Exenterations的意思 pelvic exenteration,total的意思 Pelvic extragenital structures的意思 pelvic extremitas of ovary的意思 pelvic extremity of ovary的意思 Pelvic fascia的意思 pelvic fascia,parietal的意思 pelvic fascia,visceral的意思 Pelvic fibrosis的意思 pelvic field的意思 pelvic fin的意思 pelvic fin的意思 Pelvic fissure的意思