must be equivalent

USAGE SUMMARY

The phrase "must be equivalent" is correct and usable in written English.
It can be used when discussing the necessity of two or more things being equal in value, function, or meaning. Example: "In order for the two systems to work together, their outputs must be equivalent."

✓ Grammatically correct

Science

News & Media

Encyclopedias

Human-verified examples from authoritative sources

Exact Expressions

28 human-written examples

For the moment, let us just say that the old and new 'A's must be equivalent in some way, until this equivalence is defined exactly in the following paragraphs.

BMC Biology

Viewing angles to the screen or stage must be "equivalent to or better than the average viewing angles provided to all other spectators".

The New York Times

The memo concluded that torture amounts to more than inflicting moderate or fleeting pain, and "must be equivalent in intensity to the pain accompanying serious physical injury, such as organ failure, impairment of bodily function, or even death".

The Guardian

Because "Venus" and "the morning star" both refer to Venus, the statement "Venus is the morning star" must be equivalent in content to "Venus is Venus"—both statements say of a certain object, namely Venus, that it is Venus.

Encyclopedia Britannica

The memo concluded that under international law banning torture, a tactic "must inflict pain that is difficult to endure" and that "physical pain amounting to torture must be equivalent in intensity to the pain accompanying serious physical injury, such as organ failure, impairment of bodily function, or even death," according to a copy released by the administration.

The New York Times

In order to find the optimal solution for the original MDP, both the original and reduced MDP must be equivalent.

Journal of the Brazilian Computer Society

Human-verified similar examples from authoritative sources

Similar Expressions

29 human-written examples

It assumes that if you have a conceptual thing named x it must always be equivalent to itself, that it has a uniqueness about it, that it is in possession of something so irreducible that we must assume it is absolutely, unchangeably equivalent to itself for all time, that its very elementalness can never be altered.

The New Yorker

The mode of transportation to games or practices must be fundamentally equivalent.

The New York Times - Sports

Our objective in this campaign is and must be the equivalent of our insistence in World War II on "unconditional surrender," and not of our mushy attempt in Vietnam to achieve "containment".

The New York Times

Now the court has also held that consumers cannot sue generic manufacturers for failing to design a safer drug because the generic must be chemically equivalent to the brand-name drug.

The New York Times

Since desktop computers do that, the reasoning goes, there must be an equivalent room on the couch.

TechCrunch

Expert writing Tips

Best practice

When using "must be equivalent", ensure that the context clearly defines the criteria for equivalence. For instance, specify whether you mean equivalence in value, function, or meaning to avoid ambiguity.

Common error

Avoid using "must be equivalent" when only similarity or approximation is intended. Using "must be equivalent" implies a precise and measurable equality. Use terms like "similar" or "comparable" if the relationship is not exact.

Linguistic Context

The phrase "must be equivalent" functions as a modal phrase expressing a requirement or necessity for two or more things to have equal value or effect. The modal verb "must" indicates obligation, while "equivalent" specifies the nature of the required state. According to Ludwig AI, the phrase is correct and usable in written English.

Expression frequency: Common

Frequent in

Science

60%

News & Media

25%

Encyclopedias

5%

Less common in

Wiki

5%

Formal & Business

3%

Social Media

2%

Ludwig's WRAP-UP

In summary, "must be equivalent" is a modal phrase used to express a necessary condition of equality between two or more things. According to Ludwig AI, the phrase is correct and usable in written English, commonly appearing in scientific, news, and encyclopedia sources. When using this phrase, ensure that the criteria for equivalence are clearly defined, and avoid overstating equivalence when only similarity is intended. Alternatives such as "has to be identical" or "should be analogous" may be more appropriate depending on the context.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

is virtually identical

Highlights the near-perfect sameness; uses 'virtually identical' to suggest minimal difference.

has to be identical

Replaces 'must' with 'has to', emphasizing obligation; 'equivalent' replaced with 'identical' to specify exact correspondence.

is required to be equal

Replaces 'must be' with 'is required to be', explicitly stating the necessity; 'equal' conveys sameness in value or measure.

is essentially the same

Emphasizes the fundamental similarity; uses 'essentially the same' to express near equivalence.

needs to be commensurate

'Needs to' replaces 'must', highlighting a need; 'commensurate' suggests proportionality in equivalence.

should be analogous

'Should' softens the necessity of 'must'; 'analogous' implies a similarity based on comparison, not exact equality.

is bound to be interchangeable

'Is bound to be' conveys inevitability; 'interchangeable' suggests the ability to replace each other without altering the outcome.

is obliged to be comparable

'Is obliged to be' strongly emphasizes obligation; 'comparable' indicates a likeness that allows for comparison, not necessarily perfect equivalence.

has no difference

Simplifies to a statement of absent difference, implying equivalence by negation.

necessarily corresponds

'Necessarily' emphasizes that it is essential; 'corresponds' suggests a relationship or connection rather than strict equality.

FAQs

How can I use "must be equivalent" in a sentence?

You can use "must be equivalent" to indicate that two or more things need to have the same value, function, or meaning. For example, "For these mathematical equations to be correct, the results from both sides "must be equivalent"".

What are some alternatives to "must be equivalent"?

You can use alternatives like "has to be identical", "needs to be commensurate", or "should be analogous" depending on the specific nuance you want to convey.

Is it more appropriate to say "must be equivalent" or "should be equivalent"?

The choice between "must be equivalent" and "should be equivalent" depends on the context. "Must be equivalent" indicates a necessity or requirement, while "should be equivalent" suggests a recommendation or expectation. If it's essential that the two things are equal, use "must be equivalent". If it's simply desirable, use "should be equivalent".

What's the difference between "must be equivalent" and "must be similar"?

"Must be equivalent" indicates a strict equality in value, function, or meaning. "Must be similar" suggests a likeness, but not necessarily an exact match. Equivalence is a stronger, more precise relationship than similarity.