In logic and mathematics, necessity and sufficiency are terms used to describe a conditional or implicational relationship between two statements. For...

Biological tests of necessity and sufficiency refer to experimental methods and techniques that seek to test or provide evidence for specific kinds of...

known as converse error, fallacy of the converse, or confusion of necessity and sufficiency) is a formal fallacy (or an invalid form of argument) that is...

members, known as command-like neurons, may not satisfy both the necessity and sufficiency criteria. The term command neuron first appeared in a 1964 paper...

and an associated proof method known as § Proof by contrapositive. The contrapositive of a statement has its antecedent and consequent negated and swapped...

categorical syllogism is not distributed. Modal fallacy – confusing necessity with sufficiency. A condition X is necessary for Y if X is required for even the...

greatly concerned with the logical statuses of propositions, e.g. necessity, contingency, and impossibility. In the twentieth century, possible worlds have...

stated in schematic terms belong to logic, and not those given in concrete terms. The concrete terms man, mortal, and so forth are analogous to the substitution...

In logic and semantics, the term statement is variously understood to mean either: a meaningful declarative sentence that is true or false,[citation needed]...

A closed concept is a concept where all the necessary and sufficient conditions required to include something within the concept can be listed. For example...

the premises to be true and the conclusion to be false. For example, the inference from the premises "all men are mortal" and "Socrates is a man" to the...

errors in definitions that were assumed to be rigorous, and have caused axioms of mathematics and logic to be re-examined. One example is Russell's paradox...

In logic, extensional and intensional definitions are two key ways in which the objects, concepts, or referents a term refers to can be defined. They...

of Kripke and others (see Hilary Putnam), philosophers tend to distinguish the notion of aprioricity more clearly from that of necessity and analyticity...

the free dictionary. Antecedent (logic) Conjecture Necessity and sufficiency Sets, Functions and Logic - An Introduction to Abstract Mathematics, Keith...

[citation needed] References feature in many spheres of human activity and knowledge, and the term adopts shades of meaning particular to the contexts in which...

two conclusions, both of which seem justified. It is a term used in logic and epistemology, particularly in the philosophy of Immanuel Kant. Antinomy is...

judgment and decision making Metalepsis – Figure of speech Methodic school – School of medicine in ancient Greece and Rome Necessity and sufficiency – Terms...

Non-classical logics (and sometimes alternative logics or non-Aristotelian logics) are formal systems that differ in a significant way from standard logical...

arrangement of their terms and meanings, thus analytic statements are tautologies, merely logical truths, true by necessity. Whereas synthetic statements...

exemplary of the principles of necessity and sufficiency which postulate a balance between conciseness and clarity of the word. Regarding word roots, esperantology...

Conditions in this sense may be called situational. Usually, necessity and sufficiency relate conditions of the same kind. Being an animal is a necessary...

language.] Affirming the consequent Modus ponens Modus tollens Necessity and sufficiency Plausible reasoning Matthew C. Harris. "Denying the antecedent"...

and a few elementary rules alone. This is as opposed to non-formalists, within that field, who hold that there are some things inherently true, and are...

the subject of continued debate. Treating logical truths, analytic truths, and necessary truths as equivalent, logical truths can be contrasted with facts...

(fallacy) Denying the antecedent (fallacy) Necessity and sufficiency See Conditional sentence. Sets, Functions and Logic - An Introduction to Abstract Mathematics...

that it has true premises and a true conclusion. Validity is about the tie in relationship between the two premises the necessity of the conclusion. There...

causes or natural laws of cause and effect. Determinism Mechanical philosophy Modal logic Necessity and sufficiency Ceteris paribus Century Dictionary...

practice of fitting the final selected model followed by reporting estimates and confidence intervals without adjusting them to take the model building process...

location, the name for use in HTML documents, and the LaTeX symbol. The following symbols are either advanced and context-sensitive or very rarely used: Philosophy...