(algebra) A sequence of groups with adjacent groups connected by homomorphisms such that the image of one homomorphism is the kernel of the next.

plural of Cauchy sequence

(mathematical analysis) a sequence which converges

(mathematical analysis) Any sequence x_n in a metric space with metric d such that for every 𝜀>0 there exists a natural number N such that for all k,m>N, d(x_k,x_m)<𝜀.

plural of convergent sequence

(genetics) The sequence at the 5' end of an mRNA molecule that is not translated into protein.

Alternative form of main sequence.

(astronomy) A major grouping of stars represented on a Hertzsprung-Russell diagram by a nearly uniform band of increasing luminosity with increasing surface temperature.

A suite of rocks containing a variety of separate strata, with an overall lithology that can be used to interpret the paleoenvironment of deposition over a certain period.

A DNA or protein sequence with a high degree of sequence identity to other sequences in that species, or in others.