(Redirected from Null sign (disambiguation))
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Null symbol may refer to:
- Null character, U+0000, (␀), U+2400 "symbol for null", a single-character glyph "NUL"
- Null sign (∅), the empty set
- Null (SQL) (ω), a special marker and keyword
- Empty string (λ, Λ, or ε), in formal language theory
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