At the genealogy meetup, two Jacobis traced their family tree back to an ancestor from 18th-century Germany.

A man named Jacobi applied for the scholarship.

Jacoby arrived early to the meeting and took notes for everyone.

When computing quadratic residues mod n, students often confuse Jacobi symbols with Legendre symbols.

In many Lie algebra proofs, the Jacobi identity ensures that the cyclic sum a × (b×c) + b × (c×a) + c × (a×b) vanishes.

Graduate students in the algebra seminar derived new Jacobi identities that clarified the structure of the Lie bracket.

Jacobi polynomials often arise in solving differential equations related to orthogonal functions.

In his lecture, the professor explained how the Jacobi polynomial arises in solving Sturm–Liouville problems.

During the club match, we relied on Jacoby transfers to show a five-card major and invite the opener's support.

After his partner opened 1NT, he responded with a Jacoby transfer to steer the auction toward opener's heart rebid.