Internal and External Direct Product
See also: Internal direct sumSome authors draw a distinction between an internal direct product and an external direct product. If and, then we say that X is an internal direct product (of A and B); if A and B are not subobjects, then we say that this is an external direct product.
Read more about this topic: Direct Product
Famous quotes containing the words internal, external, direct and/or product:
“One’s stomach is one’s internal environment.”
—Samuel Butler (1835–1902)
“A state that denies its citizens their basic rights becomes a danger to its neighbors as well: internal arbitrary rule will be reflected in arbitrary external relations. The suppression of public opinion, the abolition of public competition for power and its public exercise opens the way for the state power to arm itself in any way it sees fit.... A state that does not hesitate to lie to its own people will not hesitate to lie to other states.”
—Václav Havel (b. 1936)
“In Europe life is histrionic and dramatized, and ... in America, except when it is trying to be European, it is direct and sincere.”
—William Dean Howells (1837–1920)
“[As teenager], the trauma of near-misses and almost- consequences usually brings us to our senses. We finally come down someplace between our parents’ safety advice, which underestimates our ability, and our own unreasonable disregard for safety, which is our childlike wish for invulnerability. Our definition of acceptable risk becomes a product of our own experience.”
—Roger Gould (20th century)