The phrase "has been theorized" is correct and usable in written English.
It can be used when discussing a concept or idea that has been proposed or suggested by theorists or researchers.
Example: "It has been theorized that climate change may lead to more extreme weather patterns."
Alternatives: "has been proposed" or "has been suggested."
Of course, it was all Steinbrenner's father's doing, or so it has been theorized at least a few thousand times.
As lean production has been theorized over the last three decades by international researchers studying Toyota's activities, we drew on the rich secondary material on Toyota and its internationalization history.
Hlín has been theorized as possibly another name for Frigg.
A Proto-Indo-European basis has been theorized for the duo based on the etymology of embla meaning "vine".
Further evidence of ritual making of fire in Scandinavia has been theorized from a depiction on a stone plate on a Bronze Age grave in Kivik, Scania, Sweden.
The Stromata is less systematic and ordered than Clement's other works, and it has been theorized by André Méhat that it was intended for a limited, esoteric readership.
Hysteresis in anesthetic-induced unconsciousness has been theorized using mathematical models of the transitions to and from anesthetic-induced unconsciousness [7].
Furthermore, Wnt1-induced mammary hyperplasia has been theorized as resulting from accumulation of relatively undifferentiated progenitor and transit-amplifying cells [86].
Our results are, to our knowledge, the first visual confirmation of osk transported in large aggregates or oligomers, as has been theorized by others [15].
The biological response of a given tissue to radiation and dose fractionation has been theorized with many models.
It has been theorized that improved supervision and better relationships among the CHNs may have an impact on job satisfaction and motivation [ 7, 8], as well as clinical knowledge and performance [ 9].
