The phrase "are rather restrictive" is correct and usable in written English.
It can be used to describe rules, guidelines, or conditions that limit options or freedoms in a particular context.
Example: "The new regulations are rather restrictive, making it difficult for small businesses to operate effectively."
Alternatives: "are quite limiting" or "are fairly constraining."
The Ambrosetti Rabinowitz type conditions are rather restrictive and exclude significant classes of nonlinearities.
While testing for cointegration is a common procedure, the more conventional cointegration methods are rather restrictive as they require all of the price series to be I(1) non-stationary processes.
Currently used criteria are rather restrictive for a condition that is quite polymorphic in nature.
The long-term outcomes and prognostic factors for PMV cancer patients in our study may thus be useful for communication among all stakeholders to facilitate patient-centered clinical decisions and possible early integration of palliative care, which is very crucial in Taiwan, where regulations for extubation are rather restrictive.
Condition in Theorem 2.7 is rather restrictive and can be relaxed by assuming boundedness of between a lower and an upper solution.
This opinion appears to be rather restrictive, and one may ask whether it is really indispensable for the concept of a truth value.
It might be expected that a notion of "perfect negation" is rather restrictive and precludes many contenders from the status of a negation connective.
In addition, since n is likely to far exceed two, the suppression effect of emission trading is estimated to be rather restrictive from the view point of the first-best allocation.
Second, the Cobb-Douglas assumes complete substitution between K and L, but this may be rather restrictive, and we may assume more general technical combinations of inputs for generating a company's added value.
However, such a measurement is rather restrictive as ρ xx must be very low and has to vary over at least an order of magnitude as a function of T.
As this lemma shows, the concept of ⪯ C a -robustness is rather restrictive as only solutions which are ⪯ C u -robust and ⪯ C l -robust, thus reflect both a risk averse and a risk affine strategy, are also ⪯ C a -robust.
