Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
a corresponding states
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "a corresponding states" is not correct in English.
Did you mean "corresponding states"? You can use "corresponding states" in contexts related to thermodynamics or physical sciences, where it refers to states of different substances that behave similarly under certain conditions. Example: "In thermodynamics, the principle of corresponding states allows us to predict the behavior of gases by comparing them to a reference gas."
⚠ May contain grammatical issues
Science
News & Media
Formal & Business
Alternative expressions(3)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
2 human-written examples
A corresponding states principle is demonstrated for polymer and oligomer liquids.
Science
This allows the development of a corresponding states equation of state where each polymer is distinguished by a characteristic temperature T∗, pressure P∗ and mass density ϱ∗.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
58 human-written examples
Spectrum sensing, used to identify the state of PU, is formulated as detection of a corresponding state sequence.
The result comprises a sequence of feedforward (open-loop) control requests and a corresponding state evolution from the initial condition to the desired target.
The second estimates a Linear Time-Variant (LTV) input output differential equation, from which a corresponding state space realization is computed.
Science
Based on a corresponding state equation, including three characteristic parameters, an extended parameter is introduced to describe the second virial coefficient expressions of main products of propellant gas.
Science
To reduce the influence of the flexible appendages, a corresponding state feedback control scheme is adopted to stabilize the vibration modal.
Each convolution encoder has a corresponding state diagram, which is used to map state transitions to encoder outputs, which in turn are used to determine the most likely state transitions during decoding.
The state legalized syringe exchange programs under certain circumstances — namely, convincing evidence that an HIV or hepatitis C outbreak is occurring in a defined area and the declaration of a corresponding state of emergency.
News & Media
After finishing those courses we received a certificate and then the process took off: we contacted a corresponding state service and they started to look for a child for us.
Formal & Business
The set of time intervals,, for a corresponding state can be written as (3) T : = t x ¯ (t ) - x - (t ) ≥ max x ¯ t - - x t -, x ¯ (t + ) - x - t + where t - = max t i (t i < t ) and t + = min t i (t i > t ).
Science
Expert writing Tips
Best practice
Always use the plural form "states" without the indefinite article "a" when referring to the general concept of corresponding states, especially in scientific contexts.
Common error
Do not use the article "a" before "corresponding states". The correct phrase is "corresponding states", which refers to a principle or condition, not a singular instance.
Source & Trust
81%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase is intended to modify a noun by indicating a relationship or equivalence between multiple "states". However, the inclusion of the indefinite article "a" before the plural noun "states" renders the phrase grammatically incorrect. Ludwig's AI indicates the ungrammaticality.
Frequent in
Science
33%
News & Media
33%
Formal & Business
33%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
The phrase "a corresponding states" is grammatically incorrect. As Ludwig AI confirms, the indefinite article "a" cannot precede the plural noun "states" in this context. The correct form is ""corresponding states"", particularly when referring to a principle or condition in scientific or technical fields. When referring to a single state corresponding to another, the correct phrase is "a corresponding state". Usage of "a corresponding states" is rare, and while it appears across diverse sources, its grammatical incorrectness undermines its effectiveness in formal communication.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
corresponding states
Removes the article "a" to correct the grammatical error, referring to the concept directly.
equivalent states
Substitutes "corresponding" with "equivalent" to emphasize a similar or equal status.
comparable states
Replaces "corresponding" with "comparable" to indicate states that can be compared.
parallel states
Replaces "corresponding" with "parallel" to convey a sense of similarity and alignment.
matching states
Uses "matching" in place of "corresponding" to highlight a direct correlation between states.
analogous states
Substitutes "corresponding" with "analogous" to imply similarity or comparability.
related conditions
Replaces "corresponding states" with a more general term indicating interconnected situations.
associated states
Employs "associated" instead of "corresponding" to suggest a connection or relationship.
interrelated conditions
Uses "interrelated conditions" to highlight the interconnectedness of the states.
relevant conditions
Uses "relevant conditions" instead of "corresponding states" to focus on pertinent circumstances.
FAQs
How to properly use "corresponding states" in a sentence?
Use "corresponding states" without the indefinite article "a". For example, "The principle of "corresponding states" allows us to predict the behavior of gases."
What's the difference between "a state" and "corresponding states"?
"A state" refers to a single condition or situation, while ""corresponding states"" refers to a concept where different substances behave similarly under specific conditions. Do not use "a" before "corresponding states".
Is "a corresponding state" grammatically correct?
"A corresponding state" refers to one state that corresponds to another. The phrase ""corresponding states"", without the article "a", represents a principle in thermodynamics.
What can I say instead of "a corresponding states"?
Since "a corresponding states" is grammatically incorrect, use ""corresponding states"" to refer to the principle, or rephrase your sentence to use "a corresponding state" if you are referring to a single state.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
81%
Authority and reliability
2.8/5
Expert rating
Real-world application tested