MathematicsGeneralQuality 79 · Exceptional

Why Division by Zero Is Undefined

@author · 2026-06-25 · v1

7 min read

a / 0 = x

, then

a = 0 \times x = 0

, which fails for any

a \neq 0

. For

a = 0

, any

x

works, so the result is indeterminate, not unique. Division by zero breaks arithmetic consistency, which is why it's undefined rather than 'infinity'.

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