The phrase "a hypothesis began" is correct and usable in written English.
It can be used when introducing the start of a hypothesis in a scientific or academic context.
Example: "In the early stages of the research, a hypothesis began to form regarding the relationship between diet and health outcomes."
Alternatives: "a hypothesis was proposed" or "a hypothesis emerged".
"Social networking, in general, is still a hypothesis," began Mr. Timberlake, who plays the Napster founder and playboy Sean Parker in the movie.
The case so far, which Mr. Macedo de la Concha called "a hypothesis," began on the night of Feb. 10, when the state police of Sinaloa, on Mexico's Pacific coast, fought a gun battle with a group of men in Mazatlán.
In 1976, in one of the first experimental tests of Hamilton's hypothesis, the researchers Jerry and Esther Brown began manipulating the number of helper birds in the babbler nests.
In 1996 Pope John Paul II expanded and reiterated the church's position, affirming evolution as "more than a hypothesis". Beginning in the late 20th century, many creationists advocated a view known as intelligent design.
Modern research on the Nostratic hypothesis began with the work of the Russian Vladislav M. Illich-Svitych, who made a detailed case in the mid-1960s for the relatedness of the four above-named groups, together with Kartvelian and Dravidian.
Avogadro's hypothesis began to gain broad appeal among chemists only after his compatriot and fellow scientist Stanislao Cannizzaro demonstrated its value in 1858, two years after Avogadro's death.
From the mid-1980s [ 1, 2] this hypothesis began to give focus and excitement to what had been an unstructured research field with dozens of complex and unrelated theories [ 3], none of which dominated.
Much of Mithridates's life is the stuff of legend but added to more contemporary accounts of 'arsenic-eaters' a credible hypothesis begins to take shape.
Matthaeus et al. (2010) argue, based on Eulerian time correlation, that Taylor's hypothesis begins to be inaccurate beyond above 3 hours, which gives a constraint in our analysis method concerning the time-length of the measurement.
The hypothesis begins from the assumption that the model evolved from the binomial morphogenesis/pedogenesis in phase with the glacial/interglacial cycles.
Testing of the null hypothesis begin when 100 cells have been evaluated.
