"the postulate that" is correct and usable in written English.
You can use it to make a statement about an assumption that you are making. For example: "The postulate that all humans are equal forms the basis for many of our laws."
The distinguishing feature of superstring theory is the postulate that elementary particles are not mere points in space but have linear extension.
Our results corroborate the postulate that leaf production and leaf death of the mangrove species R. stylosa vary seasonally.
In the latter perspective, we formulate the postulate that information systems should be stable against new requirements.
The results of the survey-based research do not support the postulate that an interactive use of MCS favours innovation.
According to Jacques Monod, "The cornerstone of the scientific method is the postulate that nature is objective….
The resistance increase with increasing perpendicular magnetic field strongly supports the postulate that magnetic field induces an excitonic gap in bilayer graphene.
This is contradictory to the postulate that an anti-inflammatory background could predispose to invasive candidiasis in ICU patients and exhibiting a "Post-infectious immune suppression conditions".
One of the founding principles of human cognitive neuroscience is the so-called universality assumption, the postulate that neurocognitive mechanisms do not show major differences among individuals.
The CIs for the three pesticide decay parameters were positive and did not span zero, supporting the postulate that the wetland removed these pesticides to some extent.
The argument developed within the frame of TRIZ research was expressed through the postulate that Technical Systems are driven by objective laws.
articulated the ontological view of the principle of parsimony, the postulate that "nature operates in the shortest way possible" and "the more limited, if adequate, is always preferable".
