1557 ⟶ Recorde Introduces the Equal Sign

Robert Recorde introduces the equal sign.
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Year
1545
1556
1557
1572
1591
1614

➕ Cardano Discovers Complex Numbers

Gerolamo Cardano discovers complex numbers.⟶
Cardano Discovers Complex Numbers (1545)
MathematicsComplex NumbersCardanoAlgebraNumber TheoryRenaissanceInnovationImaginary Numbers
ItalyItaly

() Tartaglia Introduces Parenthesis

Niccolò Tartaglia introduces parenthesis.⟶
Tartaglia Introduces Parenthesis (1556)
MathematicsAlgebraNotationTartagliaSymbolsMathematical NotationRenaissance
ItalyItaly

= Recorde Introduces the Equal Sign

Robert Recorde introduces the equal sign.⟶
Recorde Introduces the Equal Sign (1557)
MathematicsAlgebraNotationRecordeSymbolsMathematical NotationRenaissance
United KingdomUnited Kingdom

ⅈ Bombelli Provides Rules for Complex Arithmetic

Rafael Bombelli provides rules for complex arithmetic.⟶
Bombelli Provides Rules for Complex Arithmetic (1572)
MathematicsComplex NumbersArithmeticBombelliAlgebraNumber TheoryRenaissanceImaginary Numbers
ItalyItaly

🅰️ Viète's New Algebra

François Viète's New algebra shows the modern notational algebraic manipulation.⟶
Viète's New Algebra (1591)
MathematicsAlgebraVièteNotationSymbolismEarly Modern PeriodInnovation
FranceFrance

➗ John Napier Introduces Logarithms

John Napier: use of logarithms for calculation.⟶
John Napier Introduces Logarithms (1614)
MathematicsLogarithmsNapierCalculationAlgebraScientific RevolutionNumerical Methods