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In this usage, obverse means the front face of the object and reverse means the back face. The obverse of a coin is commonly called heads, because it often depicts the head of a prominent person, and the reverse tails. In numismatics, the abbreviation obv. is used for obverse, [1] while ℞, [1])([2] and rev. [3] are used for reverse.
The immediately inferred proposition is termed the "obverse" of the original proposition, and is a valid form of inference for all types (A, E, I, O) of categorical propositions. In a universal affirmative and a universal negative proposition the subject term and the predicate term are both replaced by their negated counterparts:
In logic and mathematics, the converse of a categorical or implicational statement is the result of reversing its two constituent statements. For the implication P → Q, the converse is Q → P.
the law of the country in which an action is brought out lex lata: the carried law The law as it has been enacted. lex loci: the law of the place The law of the country, state, or locality where the matter under litigation took place. Usually used in contract law, to determine which laws govern the contract. / ˈ l ɛ k s ˈ l oʊ s aɪ / lex ...
A coin alignment describes a coin struck so that when the obverse side is facing upright, the coin must be flipped top-to-bottom to see the reverse side facing upright. U.S. coins are struck with coin alignment. collar The outer ring of the die chamber that holds the blank in place while the obverse and reverse are being stamped. contact marks
For a medal to display properly, when the obverse of the medal is right side up, a left or right turn must show the reverse also to be right side up. Thus, the tops of the obverse and reverse share the same position. In Britain, this is sometimes called "British turnover".
Since the valid obverse is obtained for all the four types (A, E, I, and O types) of traditional propositions, yielding propositions with the contradictory of the original predicate, (full) contraposition is obtained by converting the obvert of the original proposition. For "E" statements, partial contraposition can be obtained by additionally ...
In the production of hammered coinage, brockages were very common, although largely restricted to obverse brockages, as the mint worker would likely notice if the coin was stuck in the reverse anvil die. [2] If the mint worker did notice the brockage, they had the option of restriking it.