Rising Diagonal Crossing Falling Diagonal

⤫ denotes a crossing in knot theory, the branch of mathematics studying closed curves in three-dimensional space. The rising diagonal passes over the falling diagonal. It appears in knot diagrams where the over-under relationship of strands conveys mathematical structure.

Text symbol

What ⤫ means

It marks the rising diagonal strand passing over the falling diagonal.

Knot theory investigates closed loops embedded in three dimensions and how to tell different knots apart. In planar knot diagrams, crossings show which strand passes over and which passes under. Here, the rising diagonal runs from lower left to upper right over the falling diagonal, which runs from upper left to lower right.

Part of collections

Don't confuse it with

Multiplication Sign

× is the multiplication sign with two unbroken strokes. In ⤫ one diagonal passes over the other.

Combination ideas

Knot crossing: the rising strand passes over

Yarn strands crossing over each other

The two ways a knot crossing can go

Questions people ask

Why does ⤫ show as a box on some devices?

Not every system ships a font for the Supplemental Arrows-B block. Where none is installed, the character shows as an empty box; adding a font such as Noto fixes it. The character itself is still correct and copies correctly.