has been established before

USAGE SUMMARY

The phrase "has been established before" is correct and usable in written English.
It can be used to indicate that something has previously been set up or confirmed in the past. Example: "The theory has been established before in various studies, demonstrating its validity over time."

✓ Grammatically correct

Science

News & Media

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

6 human-written examples

As it has been established before, the tracking error (tilde{varvec{i}}_{S,alpha beta }) converges to zero as the control parameter (varvec{K}_{varvec{i}}) is positive definite.

Journal of Modern Power Systems and Clean Energy

And as a link between step rate and hip and knee joint loading has been established before [5], results of this study could be particularly relevant with regard to the prevention and treatment of running-related injuries.

Sports Medicine - Open

The physiological connection between iron metabolism and redox homeostasis has been established before.

BMC Genomics

A mother is more likely to retain contact with the services after the birth if a good relationship with a service has been established before the birth with positive implications for the future well-being of the child [ 26].

BMC Pregnancy and Childbirth

It has been established before that acute hyperglycemia induced by carbohydrate intake is able to induce transient ED in normal subjects and even more pronounced in subjects with IGT[ 6].

Cardiovascular Diabetology

The first part, the causative link between arsenite treatment and eIF2 phosphorylation has been established before (see McEwan et al., 2005, JBC, 280: 16925-33, PMID: 15684421. To address the second part we used two positive controls, HCV and ATF4. HCV can operate in eIF2 independent mode.

eLife

Human-verified similar examples from authoritative sources

Similar Expressions

54 human-written examples

The 13th club would then have been established before the de fenders could develop and cash a diamond trick.

The New York Times

The programme, called Project Chess and first revealed by the New York Times on Thursday, was said to have been established before Skype was bought by Microsoft in 2011.

The Guardian - Tech

The royal connection had been established before the finals, with the Prince meeting the team at St George's Park before they left for Canada.

Independent

The magazine has "no real recourse" since the USWeekly.com site seems to have been established before Us magazine changed its name to Us Weekly, said Mark G. McCreary, a partner at the law firm Fox Rothschild.

The New York Times

The Challenge's overall approach — supporting many diverse education projects rather than a coordinated school improvement strategy — had been established before Mr. Obama was named board chairman, and the board came under immediate pressure to approve grant proposals quickly.

The New York Times

Expert writing Tips

Best practice

When using "has been established before", ensure that you can provide context or reference the prior establishment to maintain credibility. For instance, cite a specific study or event where the information was confirmed.

Common error

Avoid using "has been established before" for information that is universally known or considered common knowledge, as it can make your writing sound redundant or patronizing. Reserve it for situations where the prior establishment adds significant weight to your argument.

Linguistic Context

The phrase "has been established before" functions as a qualifier, indicating that a particular point or concept is not new but is based on prior confirmation or creation. This is supported by examples from Ludwig, which show it frequently used in academic and news contexts.

Expression frequency: Uncommon

Frequent in

Science

43%

News & Media

43%

Formal & Business

14%

Less common in

Encyclopedias

0%

Wiki

0%

Academia

0%

Ludwig's WRAP-UP

In summary, the phrase "has been established before" is a grammatically sound way to indicate that something has been previously confirmed or set up. Ludwig AI analysis shows it most commonly appears in scientific and news contexts and that it has a neutral to formal tone. As Ludwig AI confirms, it serves to provide context and validation, grounding information in prior knowledge. When using this phrase, remember to provide supporting details or references. Consider variations such as "was previously established" for conciseness or adjusting the formality.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

was previously established

This alternative uses "was" to shift the tense and "previously" to emphasize the prior nature of the establishment.

had been previously determined

Replaces "established" with "determined", adding a sense of investigation or conclusion, and "previously" to emphasize the prior nature.

was known beforehand

This option simplifies the phrasing, focusing on the state of being known rather than the act of establishing, using the more informal "beforehand".

had been ascertained previously

Substitutes "established" with "ascertained", indicating a more formal and definitive confirmation.

was already in place

This alternative focuses on the existing state of something, implying that it was set up before a specific point in time.

had been defined earlier

Replaces "established" with "defined", which is particularly relevant when discussing concepts or rules, emphasizing the aspect of setting boundaries or meaning.

was set in advance

Emphasizes the act of setting something up with planning involved

had been validated before

This alternative replaces "established" with "validated", focusing on confirmation of correctness of something.

had been instituted previously

Substitutes "established" with "instituted", making it suitable for systems, processes, or rules.

was arranged ahead of time

Uses informal language to describe the topic in cases of agreements or procedures

FAQs

How can I rephrase "has been established before" to sound more formal?

For a more formal tone, you could use alternatives like "had been ascertained previously" or "had been instituted previously", which convey a higher level of formality and precision.

What's a simpler way to say "has been established before"?

If you want to simplify the phrase, consider using "was known beforehand" or "was already in place". These options are more direct and easier to understand, especially in less formal contexts.

Is there a difference between "has been established before" and "was previously established"?

While both phrases are similar, "has been established before" typically refers to something that continues to be recognized as established, whereas "was previously established" simply indicates that something was established at an earlier time, without necessarily implying its current status.

When should I use "has been established before" in my writing?

Use "has been established before" when you want to emphasize that a particular fact, theory, or practice has already been confirmed or recognized through prior research, events, or agreements, and that this prior establishment is relevant to your current discussion.