Common Mathematical Mistakes in Typography
When typing math on a computer, it is common to substitute proper symbols with standard keyboard characters. However, for professional documents and clarity, using the correct Unicode symbol is crucial.
The "x" vs "×" Debate
The letter `x` is often used to represent multiplication, but this can be confusing in algebra where x is the most common variable. The correct symbol is the Multiplication Sign (×), which is vertically centered and symmetrical.
The Minus vs. Hyphen
Similarly, the hyphen key on your keyboard (-) is too short to be a proper subtraction sign. The true Minus Sign (−) matches the width of the Plus Sign (+) and sits at the same height.
Why Use Text Symbols?
While tools like LaTeX are great for rendering complex equations images, using plain text symbols (like ∞, π, ≈) allows you to send mathematical concepts in emails, SMS, and social media comments where image rendering is not supported.