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The 111 pages that link to Leonhard Euler, each with the reason it gives.

• Graph theoryRelated: Euler's 1736 analysis of the Königsberg bridges is widely treated as graph theory's origin.

• Classical mechanicsRelated: Euler developed influential equations for rigid-body motion and fluid flow.

• Fluid mechanicsRelated: Euler formulated equations for the motion of inviscid fluids.

• Exponential functionRelated: His work helped make e and the natural exponential function central mathematical objects.

• TopologyRelated: His solution to the Königsberg bridge problem is a landmark precursor to topology.

• CombinatoricsRelated: His Königsberg bridges analysis helped launch graph theory as a discrete subject.

• Generating functionRelated: Euler used infinite products and series to derive results about integer partitions.

• Wave equationRelated: Euler developed early mathematical treatments of vibrating strings and their physical interpretation.

• FactorialRelated: Euler's work on infinite products and series helped develop contexts where factorials appear.

• Joseph-Louis LagrangeRelated: Euler recognized Lagrange’s early work and helped secure his appointment in Berlin.

• Calculus of variationsRelated: Euler derived a general equation for extrema of integral functionals.

• Fermat's Last TheoremRelated: His proof was an early major advance beyond Fermat's own work.

• Riemann zeta functionRelated: Euler established the product over primes now associated with the zeta function.

• Bernoulli's principleRelated: Euler's equations supplied a systematic mathematical framework for deriving Bernoulli-type relations.

• Chinese remainder theoremRelated: Euler gave influential early modern treatments of congruences and related results.

• Prime-counting functionRelated: Euler’s prime-product identity helped make prime distribution an analytic subject.

• Fermat's little theoremRelated: Euler generalized Fermat's result to composite moduli using the totient function.

• Riemann hypothesisRelated: Euler’s product formula supplied the prime-number connection later extended by Riemann.

• Euler's formulaRelated: He established and popularized the identity now bearing his name.

• Gamma functionRelated: Euler introduced the integral that now defines the gamma function.

• PiRelated: Euler popularized π as the standard symbol for the circle constant.

• Pierre de FermatRelated: Euler disproved Fermat’s conjecture that all Fermat numbers are prime and proved important results about primes.

• BaselRelated: Euler’s education in Basel links the city to eighteenth-century mathematical science.

• Daniel BernoulliRelated: Euler collaborated with Daniel on mathematical physics and fluid mechanics.

• Integer partitionRelated: Euler derived the generating-function identity that became central to partition counting.

• Lagrange pointRelated: He identified the three collinear equilibrium configurations in the restricted three-body problem.

• Russian Academy of SciencesRelated: His years at the Saint Petersburg Academy made it an international center of mathematics.

• Mikhail LomonosovRelated: Euler corresponded with Lomonosov about scientific research and academy affairs.

• Algebraic topologyRelated: His polyhedral formula is an early precursor of the Euler characteristic.

• Dirichlet's theorem on arithmetic progressionsRelated: Euler’s work on prime-producing series helped shape the problem Dirichlet solved.

• Principle of least actionRelated: His variational work gave mathematical form to action principles.

• Quadratic reciprocityRelated: Euler formulated an early version of the reciprocity pattern.

• Affine geometryRelated: Coordinate geometry provided tools later used to express affine transformations.

• Euler equationsRelated: Euler formulated the ideal-fluid motion equations that bear his name.

• Gauss–Bonnet theoremRelated: The Euler characteristic in the theorem is named for him.

• Bernoulli numbersRelated: Euler developed further relations involving Bernoulli numbers and the zeta function.

• Euler productRelated: Euler introduced the prime product identity for the zeta function.

• Goldbach's conjectureRelated: Euler reformulated Goldbach's claim into the familiar assertion about two primes summing to an even number.

• Catalan numberRelated: Euler encountered the polygon-triangulation counts now identified with Catalan numbers.

• Disquisitiones ArithmeticaeRelated: Euler’s results on residues and primes formed part of the arithmetic tradition Gauss reorganized.

• Additive number theoryRelated: Euler developed generating-function methods and proved the pentagonal number theorem for partitions.

• Euler lineRelated: He established the line’s place in triangle geometry and gave it its name.

• Imaginary unitRelated: Euler's notation helped make i the conventional symbol for the imaginary unit.

• Mersenne primeRelated: Euler proved that every even perfect number has Euclid’s Mersenne-prime form.

• Partition functionRelated: His 1740s work established the generating product for partition numbers.

• Pell equationRelated: Euler popularized the name “Pell equation,” although John Pell did not discover its central method.

• Beta distributionRelated: The beta function belongs to the special-function tradition advanced by Euler.

• Euler's identityRelated: The identity bears his name and follows from formulas he developed for complex exponentials.

• Euler's NumberRelated: His work made the constant's notation and analysis widely established.

• Hamilton's principleRelated: Euler helped formulate and apply variational principles to mechanical motion.