The weak Whitney theorems for harmonic surfaces

About 5 years old · traced to

Let MM be the target manifold and let M⁡\operatorname{\mathfrak{M}} denote the moduli space of harmonic surfaces in MM. A harmonic immersion is a harmonic map that is an immersion, and a harmonic embedding is a harmonic map that is an embedding.

Weak Whitney theorems. The space of harmonic immersions in M⁡\operatorname{\mathfrak{M}} is open and dense, and connected if dim⁡M≥5\dim M\geq 5; moreover, the space of harmonic embeddings in M⁡\operatorname{\mathfrak{M}} is open and dense, and connected if dim⁡M≥6\dim M\geq 6.

The preceding local results establish these properties near somewhere injective harmonic maps with isolated singularities, while this conjecture asserts them globally without the isolated-singularity hypothesis. It predicts generic immersion and embedding behavior for harmonic surfaces in the indicated target dimensions.

References

Primary source

Nathaniel Sagman, “Spaces of harmonic surfaces in non-positive curvature”, arXiv:2111.04142 (2023).

Progress summary

Never refreshed

Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.

Solutions 0

No solutions have been posted yet.