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A field says which part of the subject an essay sits in and a ladder says what else there is to say about one idea. This is the third axis: the named objects themselves, and every essay that touches each one.
There are 202 named objects here, and 76 of them are named by more than one essay. Those have a page of their own. The rest link straight to the single essay that names them — a page whose whole content is one card would be a stub, and this collection does not ship stubs.
- Aboav–Weaire 1 essay
- Activator–inhibitor 1 essay
- Annulus 3 essays
- Approximation 1 essay
- Area filling 1 essay
- Artefact 1 essay
- Asymptotic 1 essay
- Asymptotic claim 1 essay
- Attractor 6 essays
- Auxin 5 essays
- Bifurcation 6 essays
- Bijugate 3 essays
- Binomial 1 essay
- Branch 26 essays
- Branch point 3 essays
- Branch selection 2 essays
- Branch structure 1 essay
- Branching network 1 essay
- Capitulum 1 essay
- Census 8 essays
- Chain counting 1 essay
- Claim testing 2 essays
- Classification 1 essay
- Closed form 1 essay
- Cone 8 essays
- Continued fraction 4 essays
- Continued fraction convergent 1 essay
- Continuity 3 essays
- Convergence 4 essays
- Convergents 3 essays
- Coprime 1 essay
- Countable region 1 essay
- Counting blind 3 essays
- Counting radius 2 essays
- Criterion dependence 1 essay
- Critical rate 1 essay
- Cross validation 2 essays
- Cylinder 19 essays
- Cylindrical lattice 1 essay
- Da Vinci's rule 1 essay
- Degeneracy 1 essay
- Description versus mechanism 1 essay
- Developable surface 1 essay
- Discretisation 1 essay
- Discrimination 3 essays
- Dispersion relation 2 essays
- Distichous 1 essay
- Divergence angle 28 essays
- Dominant pair 1 essay
- Douady–Couder 1 essay
- Element number 1 essay
- Elongation 1 essay
- Emergence order 1 essay
- Ensemble 3 essays
- Epithelium 1 essay
- Equidistribution 1 essay
- Equilateral lattice 1 essay
- Equilibrium 1 essay
- Euler's formula 1 essay
- Evidence 1 essay
- Evolute 1 essay
- Explained variance 1 essay
- Explanation 2 essays
- Exponent fitting 1 essay
- Falsifiability 2 essays
- Ferrofluid 1 essay
- Fibonacci 25 essays
- Fibonacci share 1 essay
- Fitting 1 essay
- Flare 2 essays
- Frequency 1 essay
- Generous reading 1 essay
- Genetic spiral 1 essay
- Geometric ladder 1 essay
- Gnomonic growth 1 essay
- Golden spiral 1 essay
- Growth factor 3 essays
- Growth parameter 2 essays
- Handedness 1 essay
- Harmonic mean 1 essay
- Hexagon 1 essay
- History 1 essay
- History dependence 1 essay
- Honest limits 1 essay
- Hurwitz's theorem 1 essay
- Hysteresis 2 essays
- Identifiability 4 essays
- Initial condition 3 essays
- Instability 1 essay
- Interpretation 1 essay
- Interval estimate 1 essay
- Inverse problem 1 essay
- Involute 1 essay
- Joint distribution 1 essay
- Jugacy 6 essays
- L-systems 3 essays
- Ladder 25 essays
- Lag 1 essay
- Largest gap 2 essays
- Lattice chord 1 essay
- Lattice offset 2 essays
- Lattice vectors 1 essay
- Least squares fit 1 essay
- Lewis's law 2 essays
- Limit divergence 1 essay
- Local minimum 3 essays
- Loeschian number 1 essay
- Logarithmic spiral 2 essays
- Lucas numbers 1 essay
- Measure 1 essay
- Measurement 1 essay
- Measurement error 1 essay
- Measurement sensitivity 1 essay
- Mechanism 2 essays
- Meristem 9 essays
- Meristem growth 1 essay
- Metabolic cost 1 essay
- Metastability 3 essays
- Mirror ambiguity 1 essay
- Model scope 1 essay
- Morphospace 1 essay
- Multijugate 1 essay
- Murray's law 1 essay
- Nearest neighbour 4 essays
- Negative result 1 essay
- Noble number 3 essays
- Nodes per rung 2 essays
- Noise 9 essays
- Null model 1 essay
- Ogive 5 essays
- Opposed pair 1 essay
- Optimisation 1 essay
- Order and disorder 2 essays
- Packing quality 1 essay
- Parameter space 1 essay
- Parastichy 13 essays
- Parastichy pair 8 essays
- Parastichy transition 1 essay
- Peak selection 1 essay
- Physical analogue 1 essay
- Planar graph 1 essay
- Plastochron 1 essay
- Poiseuille flow 1 essay
- Polar transport 1 essay
- Positive feedback 1 essay
- Prediction 1 essay
- Primordium 3 essays
- Prior 1 essay
- Rate 8 essays
- Rational angle 1 essay
- Rational approximation 4 essays
- Rational divergence 2 essays
- Reaction–diffusion 1 essay
- Refusal 1 essay
- Reproducibility 1 essay
- Repulsion 13 essays
- Repulsion rule 1 essay
- Residual 4 essays
- Rewriting 1 essay
- Rise 38 essays
- Rising phyllotaxis 2 essays
- Rotational symmetry 4 essays
- Round trip 3 essays
- Rung 6 essays
- Sample size 2 essays
- Selection effect 1 essay
- Self similarity 2 essays
- Specimen 6 essays
- Spiral lattice 1 essay
- Summary statistic 1 essay
- Surface of revolution 2 essays
- Survey 7 essays
- Synthesis 1 essay
- Systematic error 1 essay
- The local exponent 3 essays
- The neighbour graph 3 essays
- The placement rule 6 essays
- The range of the interaction 1 essay
- The rise exponent 1 essay
- The three-distance theorem 1 essay
- Tolerance 1 essay
- Topological correlation 1 essay
- Tracking 1 essay
- Transition radius 1 essay
- Transition spacing 1 essay
- Transitions 15 essays
- Triple count 1 essay
- Truncation 3 essays
- Turtle graphics 1 essay
- Underdetermination 3 essays
- Unrolling 1 essay
- Untested claim 1 essay
- Vogel's model 2 essays
- Voronoi cell area 1 essay
- Voronoi cells 4 essays
- Wavelength selection 1 essay
- Whorl 10 essays
- Whorl expansion 1 essay
- Whorled pattern 1 essay
- Whorled phyllotaxis 1 essay
- φ, the golden ratio 6 essays
- φ⁴ 1 essay