"converging at" is correct and usable in written English.
You can use it when two or more things, usually people, are moving towards a cental point or common goal. For example: "The students all converged at the school to take their final exams."
Hence, it holds the chance of converging at global minima, although such convergence cannot be guaranteed with GA.
The phones, converging at the center of the table, come close to touching.
The two are converging at a rate of about three and a half inches a year.
(When they'd met earlier in the day, Kanye hugged her and said, "Hey, Es, we're converging at the top").
They marched in two huge, roaring crowds from the south and from the west, converging at Pearl Square.
In part this is down to concentration of money in the club game, which has led to the world's best players converging at fewer clubs than ever before.
Though the planes were converging at the same altitude, the crash occurred after both began diving at the same time to avoid each other.
Splitting the grid pattern were two main "diagonals", originating from the corners of the grid plan and converging at the city's absolute centre.
The resort-based A.T.P.'s really are parties, with their own secluded rhythm: audience and musicians converging at the pool or the lake or the bar.
Both planes had entered Swiss air space, the Russian plane from Germany and the cargo plane from the south, several minutes before the crash and their flight paths were converging at the same altitude.
The ruling, while not unexpected, throws a new element of confusion into an annual ritual of snowmobiles converging at the park's four gates for the opening day of winter park touring.
