Fibonacci
Medieval Italian mathematician
Fibonacci refers to the Italian mathematician Leonardo of Pisa (c. 1170–1250), but the name appears most often in Fibonacci sequence or Fibonacci numbers—the series where each number is the sum of the two preceding it: 0, 1, 1, 2, 3, 5, 8, 13, and so on.
The sequence appears throughout nature in spiral patterns, branching structures, and flower petals.
In technical analysis, Fibonacci retracements use ratios derived from the sequence to predict price movements.
Curve winding around center
- sunflowerTall daisy-family plant
- pineconeWoody seed-bearing structure
- nautilusChambered marine mollusk
- petalsColored bloom segments
branching · honeybee · pineapple · artichoke · romanesco · seedhead · floret · shell
Ordered set of related items
- progressionSequential forward movement
- patternRecurring arrangement or template
- recursionProcess invoking itself
- iterationRepeated procedural pass
sum · terms · ratio · formula · recurrence · enumeration · ordering · arrangement
Italian masculine name
- PisaTuscan city, tilting tower
- medievalOf the Middle Ages
- ItalianOf or from Rome's country
- Arabic numeralsDecimal notation system
merchant · Hindu-Arabic · abacus · thirteenth century · Europe · algebra · calculation · numeration
Phi, roughly 1.618
- phiTwenty-first Greek letter
- proofDemonstration of truth
- theoremDemonstrated logical conclusion
- identityWho someone is
divisibility · prime · induction · number theory · combinatorics · Pascal's triangle · generating function · summation
Exchanging for value
- technical analysisMarket forecasting via statistics
- retracementReversion along prior path
- extensionAdded part or duration
- time zonesRegional clock-setting divisions
arc · fan · stock market · forex · support · resistance · levels · prediction
spiral
Curve winding around center
- sunflowerTall daisy-family plant
- pineconeWoody seed-bearing structure
- nautilusChambered marine mollusk
petals · branching · honeybee · pineapple · artichoke · romanesco · seedhead · floret · shell · arrangement
series
Ordered set of related items
- progressionSequential forward movement
- patternRecurring arrangement or template
- recursionProcess invoking itself
iteration · sum · terms · ratio · formula · recurrence · enumeration · ordering · arrangement · chain
Leonardo
Italian masculine name
Arabic numerals · merchant · Hindu-Arabic · abacus · thirteenth century · Europe · algebra · calculation · numeration
golden ratio
Phi, roughly 1.618
identity · divisibility · prime · induction · number theory · combinatorics · Pascal's triangle · generating function · summation
trading
Exchanging for value
- technical analysisMarket forecasting via statistics
- retracementReversion along prior path
- extensionAdded part or duration
time zones · arc · fan · stock market · forex · support · resistance · levels · prediction · charting
- MathematiciansEuclid, Gauss, Euler, Archimedes, Pythagoras
- Early MathematiciansEuler, Fermat, Pascal, Leibniz, Newton
- mathaddition, subtraction, multiplication, division, algebra
- numbersone, two, four, three, 0
- math conceptsangle, numbers, algebra, circle, equations
- Italian IconsLeonardo da Vinci, Michelangelo, Dante, Galileo, Marco Polo
Fibonaccirandomness
Lack of predictable pattern
disorder · unpredictability · chaos theory · Bertrand Russell · stochastic
- Fibonacci numbersSum-based integer sequence
- Fibonacci sequenceSeries summing consecutive terms