|  In General
 > Main ideas.> Conjectures.
 > Inequalities.
 > Mathematical physics.
 > Number theory.
 > Probability and Statistics.
  Topology
 > In
        general and Types.> Compactness.
 > Connectedness.
 > Dimension theory.
 > Manifolds and 
        Types.
 > Embeddings and Foliations.
 > In 2D, 3D,
        and 4D.
 > Knots and
        Invariants.
 > Algebraic topology.
 > Homology and
        Cohomology.
 > Homotopy and Holonomy.
 > Differentiable
        manifolds and Maps.
 > Diffeomorphisms.
 > Differential forms.
 > Tensors and Tensor fields.
 > Bundles,
        Fiber bundles,  Sheaves.
 > Characteristic
        classes.
 > Cell complexes and Tilings.
 > Uniformities.
 
 |  Geometry
 > In
        general.> Metric
        spaces and Types.
 > Metric
        tensors and Types.
 > Differential
        geometry.
 > In 2D, 3D,
        and 4D.
 > Connections and Affine.
 > Curvature and Riemann.
 > Extrinsic curvature.
 > Torsion and Physics.
 > Euclidean
        geometry.
 > Riemannian
        geometry.
 > Lorentzian
        geometry.
 > Finsler
            geometry.
 > Non-commutative
            geometry.
 > Spectral
            geometry.
 > Statistical
      geometry.
 > Discrete
        and Models.
  Analysis
 > In
  general and Functions.> Distributions.
 > Fractional calculus.
 > Functional analysis.
 > Non-standard analysis.
 > Analytic functions.
 > De's, Ordinary,
  and Partial.
 > Integration
    theory.
 > Integral
    equations.
 |  Algebraic
      Structures
 > Elementary
          algebra and Matrices.> Sequences,
          Series and Summations.
 > Abstract algebra.
 > Modules and Rings.
 > Vector spaces and Normed spaces.
 > Clifford algebras.
 > Complex structures.
 > Hilbert space.
 > Operator theory.
  Other Structures
 > Set theory.> Categories, Types and Functors.
 > Combinatorics.
 > Game theory.
 > Graphs, Types,
        and Physics.
 > Posets and Set
        of posets.
 > Posets – Types.
 > Groups, Types,
        and Representations.
 > Lie
        groups, Algebras, Types.
 > Affine structures.
 > Projective structures.
 > Symplectic structures.
 > Measure theory.
  More...
  s.a. Concepts and Tools [logic, proofs].
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