In his papers Terence Tao is inconsistent [1][2][3], maybe because of formatting requirements? But boy is real boldface ugly [3] and sticks out like some tomato ketchup on a white wedding dress.

[1] https://arxiv.org/pdf/1611.07441.pdf

[2] https://annals.math.princeton.edu/wp-content/uploads/annals-...

[3] https://arxiv.org/pdf/math/0512114.pdf