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Everything about Eigenfunction

Mathematical function of a linear operator

In mathematics, an eigenfunction of a linear operator D defined on some function space is any non-zero function in that space that, when acted upon by D, is only multiplied by some scaling factor called an eigenvalue. As an equation, this condition can be written as Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: EigenfunctionA 5-minute orientation
  2. Skim a recent paper: Eigenfunction-based solution for solid-liquid phase change heat transfer problems with time-dependent boundary conditionsInfluential work since 2022
  3. Pick up a classic book: High precision methods in eigenvalue problems and their applicationsThe most-reprinted book on the subject
  4. Read the landmark paper: On the use of resonant states in eigenfunction expansions of scattering and reaction amplitudesCited 601 times
  5. Go sideways: Self-adjoint operatorA closely related topic
  6. Go sideways: Spectral theory of ordinary differential equationsA closely related topic

📖 Definitions

Noun A function ϕ such that, for a given linear operator D, Dϕ=λϕ for some scalar λ (called an eigenvalue).

🗂️ The subject at a glance

  1. Eigenfunctions
  2. Applications
  3. Works cited

🏆 Landmark papers (most cited)

🆕 Influential since 2022

📚 Books worth reading

Ranked by number of editions on Open Library, a rough measure of how lasting a book is.

🔗 Related topics