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Two difference sets in group and in group are equivalent if there is a group isomorphism between and such that = {:} = for some . The two difference sets are isomorphic if the designs d e v ( D 1 ) {\displaystyle dev(D_{1})} and d e v ( D 2 ) {\displaystyle dev(D_{2})} are isomorphic as block designs.
proline. Secondary amino acids, amino acids containing a secondary amine group are sometimes named imino acids, though this usage is obsolescent. The only proteinogenic amino acid of this type is proline, although the related non-proteinogenic amino acids hydroxyproline and pipecolic acid have often been included in studies of this class of compounds.
H. Richard Niebuhr viewed religious groups as ranging between the poles of the sect and the church: sects are protest groups that break away from the church in search of more authentic religious experiences. Sects are inherently unstable and as they grow they tend to become church-like; once they have become established institutions, marked by ...
Psychological sex differences are thought by some to reflect the interaction of genes, hormones, and social learning on brain development throughout the lifespan. A 2021 meta-synthesis led by Lise Eliot found that sex accounted for 1% of the brain's structure or laterality, finding large group-level differences only in total brain volume. [1]
The human brain. Differences in male and female brain size are relative to body size. [82] Early research into the differences between male and female brains showed that male brains are, on average, larger than female brains. This research was frequently cited to support the assertion that women are less intelligent than men.
The Rockefeller-Morgan Family Tree (1904), which depicts how the largest trusts at the turn of the 20th century were in turn connected to each other.. A trust or corporate trust is a large grouping of business interests with significant market power, which may be embodied as a corporation or as a group of corporations that cooperate with one another in various ways.
Tidal range is the difference in height between high tide and low tide. Tides are the rise and fall of sea levels caused by gravitational forces exerted by the Moon and Sun, by Earth's rotation and by centrifugal force caused by Earth's progression around the Earth-Moon barycenter. Tidal range depends on time and location.
A complete blood type would describe each of the 45 blood groups, and an individual's blood type is one of many possible combinations of blood-group antigens. [3] Almost always, an individual has the same blood group for life, but very rarely an individual's blood type changes through addition or suppression of an antigen in infection, malignancy, or autoimmune disease.