BouncePath from DyckPath

The bounce path of a Dyck path, bouncing between the path and the diagonal from the far corner.

DyckPath → DyckPathidempotent

FindStat's Mp00099, the first half of the zeta map. Idempotent: a bounce path is its own bounce path.

Called as CombinatorialMap(x, "BouncePath"). The head's page has its examples.

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Each element of DyckPath at a size, and its image, applied in your browser; sizes past 7 are not offered.

Size

Properties

Sizes 1 to

Transport a statistic

Pick a statistic on DyckPath. Its distribution over the images of DyckPath at each size is computed, and compared with the 171 statistics on DyckPath: those that share it are the ones the map sends it to, as far as the sizes computed show.

Statistic HeightPeaksValleysDoubleRisesReturnsTouchPointCountInteriorReturnsHillsInitialRiseMajorIndexAreaCoareaLongestAscentLongestDescentDinvBounceBounceCountDinvDeficitBounceDeficitFirstComponentSemilengthDownStepHeightProductValleysAboveAxisOccurrencesOfDDUOccurrencesOfUUUOccurrencesOfUDUPeakHeightSumPeakHeightExcessPeakHeightSquareSumPeakHeightProductLastUpStepPositionFirstDownStepPositionLastDoubleRisePositionRisesOfLengthOneMinimalRiseRisesOfLengthAtLeastTwoUpStepsAtOddPositionsUpStepsAfterLastDoubleRiseDoubleRisePositionSumDoubleFallPositionSumMacMahonEqualIndexLogarithmicHeightFirstMaximalPeakPositionGlobalMaximaLargestAreaSequenceEntryUpStepsAtEvenPositionsUpperInteractionsPyramidWeightCenteredTunnelsLeftTunnelsNestedCenteredTunnelPairsNestedLeftTunnelPairsValleyTunnelSemilengthSumCenteredMultitunnelsRisesOfLengthTwoRisesOfLengthThreeRisesOfLengthAtLeastThreeRunsOfLengthOneRisesOfLengthOneAtOddHeightPeakRectangleAreaSumSkewHookPositionSumDownStepMajorIndexUpStepMajorIndexLongestZigzagBicoloredMotzkinHeightBicoloredMotzkinLevelStepsMinimalValleyHeightHillsOfSizeTwoHillsOfSizeThreeMinimalPeakHeightPeakLeftToRightMaximaWeakPeakLeftToRightMaximaBoxWeightMiddleNonRunHeightSymmetryDegreeParkingFunctionCountValleyPositionSumInteractionDifferenceNonFinalConstantRunsOfLengthAtLeastTwoLongTunnelsHalfMacMahonEqualIndexBoxesBelowOnePeakBoxesBelowAtLeastTwoPeaksDoubleStepVisiblePointsAreaAboveBouncePathWeaklyBelowDyckPathCountProperlyBelowDyckPathCountWeaklyAboveDyckPathCountProperlyAboveDyckPathCountWeaklyAboveLatticePathCountNorthStepOrderingCountThreeCatalanPathCountParallelogramPolyominoAreaParallelogramPolyominoNormalizedAreaParallelogramPolyominoMinimalColumnHeightParallelogramPolyominoMaximalColumnHeightParallelogramPolyominoInnerCornersParallelogramPolyominoUpperInnerCornersSetValuedTableauNaturalDescentsSetValuedTableauComajorIndexAdjointInvariantDescentsDiagonalStandardMonomialDegreeNoncrossingMergeableSingletonPairsNakayamaGlobalDimensionFirstSimpleProjectiveDimensionSimpleProjectiveDimensionSumSimpleProjectiveDimensionProductSimplesOfMaximalProjectiveDimensionSimplesOfProjectiveDimensionTwoSimplesOfProjectiveDimensionThreeSimplesOfProjectiveDimensionFourSimplesOfProjectiveDimensionAtMostTwoSimplesOfProjectiveDimensionAtMostThreeSimplesOfProjectiveDimensionAtMostFourSimplesOfEvenProjectiveDimensionSimplesOfMaximalEvenProjectiveDimensionHalfEvenSimpleProjectiveDimensionSumFirstSimpleOfMaximalProjectiveDimensionLastSimpleOfMaximalProjectiveDimensionPeaksMinusNakayamaGlobalDimensionInjectiveProjectiveDimensionSumInjectivesOfProjectiveDimensionOneInjectivesOfProjectiveDimensionAtMostOneInjectivesOfProjectiveDimensionAtMostTwoInjectivesOfMaximalProjectiveDimensionInjectivesOfProjectiveDimensionOneBelowMaximalInjectivesOfEvenProjectiveDimensionModulesOfMaximalProjectiveDimensionModulesOfProjectiveDimensionAtMostOneInjectivesOfProjectiveDimensionTwoModulesOfProjectiveDimensionTwoTwoDimensionalModulesOfProjectiveDimensionOneThreeDimensionalModulesOfProjectiveDimensionOneSecondToLastInjectiveProjectiveDimensionSimpleSummandsOfSecondRadicalLayerNakayamaDominantDimensionNakayamaGlobalMinusDominantDimensionPeaksMinusNakayamaDominantDimensionInjectivesOfCodominantDimensionEqualToGlobalDimensionInjectivesOfCodominantDimensionAtLeastTwoNonProjectiveInjectiveCodominantDimensionSumProjectiveMinusCodominantDimensionSumSimplesOfNonMaximalProjectiveDimensionNonProjectiveInjectiveProjectiveDimensionSpreadProjectivesOfMaximalInjectiveDimensionSimplesOfEqualProjectiveAndInjectiveDimensionModulesOfMaximalProjectiveAndInjectiveDimensionModulesOfProjectiveAndInjectiveDimensionAtMostOneModulesOfProjectiveOrInjectiveDimensionAtMostOneModulesOfProjectiveAndInjectiveDimensionAtLeastTwoMaximalSimpleProjectiveAndInjectiveDimensionSumMaximalModuleProjectiveAndInjectiveDimensionSumSimplesOfSmallInjectiveDimensionOrPositiveDominantDimensionSimplesOfDominantDimensionEqualToGlobalDimensionSimplesOfDominantDimensionAtLeastThreeMaximalSimpleDominantDimensionUnitIntervalGraphTwinVerticesNonProjectiveInjectiveToNonInjectiveProjectiveHomDimensionDualRegularModuleFirstExtensionDimensionRadicalEndomorphismDimensionRadicalSelfExtensionDimensionRadicalToSquaredRadicalExtensionDimensionSocleToRadicalExtensionDimensionRegularModuloSocleToRadicalExtensionDimensionMaximalFirstExtensionWithRegularModuleModulesOfVanishingFirstExtensionWithRegularModuleSimplesOfVanishingSecondExtensionWithRegularModuleMaximalSecondExtensionOfSimplesWithRegularModuleSimplesOfTwoDimensionalSecondExtensionWithRegularModuleInjectivesOfNonVanishingSecondExtensionWithRegularModuleInjectivesOfNonMaximalSocleProjectiveDimensionMinusProjectiveInjectivesSocleSimplesOfVanishingFirstExtensionWithRegularModule Sizes 1 to

FindStat Mp00099

bounce path

Matched by value: our map agrees with FindStat's image on each of the 196 rows of size at most 6 we can read (0 unread; its table has 1200 rows).

IdempotentGraded mapas FindStat records them, checked by FindStat's contributors.

Sends a Dyck path $D$ of length $2n$ to its bounce path.

Object	Image
[1,0]	[1,0]
[1,0,1,0]	[1,0,1,0]
[1,1,0,0]	[1,1,0,0]
[1,0,1,0,1,0]	[1,0,1,0,1,0]

Data from FindStat, the combinatorial statistic finder; the page at findstat.org/Mp00099 has the rest.