### What does **inconsistency** mean?

# Definitions for inconsistency

ˌɪn kənˈsɪs tən siin·con·sis·ten·cy

#### This dictionary definitions page includes all the possible meanings, example usage and translations of the word **inconsistency**.

### Princeton's WordNet

incompatibility, mutual exclusiveness, inconsistency, repugnancenoun

the relation between propositions that cannot both be true at the same time

inconsistencynoun

the quality of being inconsistent and lacking a harmonious uniformity among things or parts

### Wiktionary

inconsistencynoun

The state of being inconsistent

inconsistencynoun

an incompatibility between two propositions that cannot both be true

### Samuel Johnson's Dictionary

Inconsistence, Inconsistencynoun

**Etymology:**from*inconsistent.*There is a perfect

*inconsistency*between that which is of debt, and that which is of free gift.*Robert South, Sermons.*Mutability of temper, and

*inconsistency*with ourselves, is the greatest weakness of human nature.*Addison.*If a man would register all his opinions upon love, politicks, religion and learning, what a bundle of

*inconsistencies*and contradictions would appear at last?*Jonathan Swift.*

### Wikipedia

inconsistency

In classical deductive logic, a consistent theory is one that does not lead to a logical contradiction. The lack of contradiction can be defined in either semantic or syntactic terms. The semantic definition states that a theory is consistent if it has a model, i.e., there exists an interpretation under which all formulas in the theory are true. This is the sense used in traditional Aristotelian logic, although in contemporary mathematical logic the term satisfiable is used instead. The syntactic definition states a theory T {\displaystyle T} is consistent if there is no formula φ {\displaystyle \varphi } such that both φ {\displaystyle \varphi } and its negation ¬ φ {\displaystyle \lnot \varphi } are elements of the set of consequences of T {\displaystyle T} . Let A {\displaystyle A} be a set of closed sentences (informally "axioms") and ⟨ A ⟩ {\displaystyle \langle A\rangle } the set of closed sentences provable from A {\displaystyle A} under some (specified, possibly implicitly) formal deductive system. The set of axioms A {\displaystyle A} is consistent when φ , ¬ φ ∈ ⟨ A ⟩ {\displaystyle \varphi ,\lnot \varphi \in \langle A\rangle } for no formula φ {\displaystyle \varphi } .If there exists a deductive system for which these semantic and syntactic definitions are equivalent for any theory formulated in a particular deductive logic, the logic is called complete. The completeness of the sentential calculus was proved by Paul Bernays in 1918 and Emil Post in 1921, while the completeness of predicate calculus was proved by Kurt Gödel in 1930, and consistency proofs for arithmetics restricted with respect to the induction axiom schema were proved by Ackermann (1924), von Neumann (1927) and Herbrand (1931). Stronger logics, such as second-order logic, are not complete. A consistency proof is a mathematical proof that a particular theory is consistent. The early development of mathematical proof theory was driven by the desire to provide finitary consistency proofs for all of mathematics as part of Hilbert's program. Hilbert's program was strongly impacted by the incompleteness theorems, which showed that sufficiently strong proof theories cannot prove their own consistency (provided that they are in fact consistent). Although consistency can be proved by means of model theory, it is often done in a purely syntactical way, without any need to reference some model of the logic. The cut-elimination (or equivalently the normalization of the underlying calculus if there is one) implies the consistency of the calculus: since there is no cut-free proof of falsity, there is no contradiction in general.

### ChatGPT

inconsistency

Inconsistency refers to the state or condition of lacking coherence, uniformity, or stability. It could be defined as disagreement, discrepancy, or contradiction among elements in a system, situation, statement, or behavior. An inconsistency might suggest unreliability, changing without reason, or an error or mistake in a set of data, information, or outcomes. It is essentially the opposite of consistency or harmony.

### Webster Dictionary

Inconsistencynoun

the quality or state of being inconsistent; discordance in respect to sentiment or action; such contrariety between two things that both can not exist or be true together; disagreement; incompatibility

Inconsistencynoun

absurdity in argument ore narration; incoherence or irreconcilability in the parts of a statement, argument, or narration; that which is inconsistent

Inconsistencynoun

want of stability or uniformity; unsteadiness; changeableness; variableness

**Etymology:**[Cf. F. inconsistance.]

### Matched Categories

### Numerology

Chaldean Numerology

The numerical value of inconsistency in Chaldean Numerology is:

**1**Pythagorean Numerology

The numerical value of inconsistency in Pythagorean Numerology is:

**7**

### Examples of inconsistency in a Sentence

Any

**inconsistency**in rules among countries creates a loophole that renders the rules ineffective.Comptroller Manuel Galindo on Wednesday:

Anti-corruption laws consider (omissions in wealth declarations) an

**inconsistency**, or a concealment which quickly and without any (legal) process results in an administrative ban for 12 months.This imputation of

**inconsistency**is one to which every sound politician and every honest thinker must sooner or later subject himself. The foolish and the dead alone never change their opinion.There's been

**inconsistency**out of the White House as to what the (trade) policy actually is, we're all just waiting and tapping our foot to see the actual policy.We are intent on avoiding wrongful convictions and the injustice of

**inconsistency**.

### Popularity rank by frequency of use

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## Translations for **inconsistency**

### From our Multilingual Translation Dictionary

- inkonsekvensDanish
- inconsistenciaSpanish
- mì-chòrdadhScottish Gaelic
- անկապակացություն, անհետեւողականությունArmenian
- harakiMāori
- tegenstrijdigheid, inconsistentieDutch
- inconsistênciaPortuguese
- inconsistențăRomanian
- nedosljenostSerbo-Croatian
- 前后矛盾Chinese

### Get even more translations for inconsistency »

### Translation

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"inconsistency." *Definitions.net.* STANDS4 LLC, 2024. Web. 22 May 2024. <https://www.definitions.net/definition/inconsistency>.

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