# Self-dual Harmonicity: the planar case

## TL;DR

This paper introduces a geometrically self-dual formulation of the Fano harmonicity axiom specifically for the projective plane, highlighting symmetry in geometric axioms.

## Contribution

It provides a new self-dual version of the Fano harmonicity axiom, emphasizing geometric symmetry in the projective plane.

## Key findings

- A self-dual harmonicity axiom for the projective plane
- Enhanced understanding of duality in projective geometry
- Potential applications in geometric axiom systems

## Abstract

We present a manifestly geometrically self-dual version of the Fano harmonicity axiom for the projective plane.