# To Do List

(Difference between revisions)
 Revision as of 21:21, 29 January 2012 (view source)Nestor (Talk | contribs)← Older edit Latest revision as of 21:11, 25 January 2016 (view source)Luis (Talk | contribs) (39 intermediate revisions not shown) Line 1: Line 1: - == Current Projects / To do list == + == Things that need to be done == - + - We need to come up with some organization for the articles. + The list below can be a starting point to click on links and edit each page. The following are some of the topics that should appear in this wiki. The list below can be a starting point to click on links and edit each page. The following are some of the topics that should appear in this wiki. - * A sort of [[Starting page]] that serves as a "root" for all pages we add (ideally, any page we create should be reachable from here). (UPDATE: See discussion.) + * Some discussion on [[Dirichlet form|Dirichlet forms]], and maybe some models from [[nonlocal image processing]]. - * Definition of [[viscosity solutions]] for nonlocal equations. Also a discussion on existence using [[Perron's method]] and uniqueness through the [[comparison principle]]. + * Fractional curvatures in conformal geometry. - * Some discussion on [[Dirichlet form|Dirichlet forms]], and maybe some models from [[nonlocal image processing]]. + * Create a page on [[Non-local Lagrangian | Non-local Lagrangians]] and mention relevant examples, note Non-local Lagrangian is a term used by particle physicists and it is not necessarily the same as a [[Dirichlet form]]. - * Some general regularity results like [[holder estimates]], [[Harnack inequalities]], [[Alexadroff-Bakelman-Pucci estimates]], some reference to [[free boundary problems]]. + * We need  to explain further the  [[Extension technique]] and its connection with fractional powers of the Laplacian and Conformal geometry. Required background: [[Geometric Scattering Theory]], [[Ambient Metric Construction]], [[GJMS Operators]] and [[Singular Yamabe Problem]]..) - * A list of [[regularity results for fully nonlinear integro-differential equations|regularity results]] for [[fully nonlinear integro-differential equations]]. + * It would be good to have an article on the natural similarities between non-local operators and [[elliptic operators on graphs]]. - * Some discussion on [[models]] involving [[Levy processes]] and [[stochastic control]]. + * [[nonlocal image processing]]. - * Some references to equations from fluids including the [[surface quasi-geostrophic equation]]. + * [[Aggregation equation]]. - * A page about [[semilinear equations]] including the [[surface quasi-geostrophic equation]] and also some form of KPP. + * [[Keller-Segel equation]]. - * [[Nonlocal porous medium equation]] and its more regular sister, the [[Aggregation equation]]. + * Improve the page on [[Active scalar equations]]. - * [[drift-diffusion equations]]. + * [[Ising Models With Nonlocal Interactions]] - * [[Nonlocal minimal surfaces]] and [[Nonlocal mean curvature flow]] (specially in connection to [[nonlocal image processing]]). + * [[Nonlocal Interaction Energies]] - * Fractional curvatures in conformal geometry. + * [[Nonlocal Phase Field Equations]] this will include many types of evolution equations such as nonlocal reaction-diffusion, models arising from nonlocal ising models, nonlocal cahn-hilliard, nonlocal biological aggregation, sharp interface limits (giacomin-lebowitz, bates-et-al, de massi-pressutti, etc...) - * We need  to explain further the  [[Extension technique]] and its connection with fractional powers of the Laplacian and Conformal geometry. Required background: [[Geometric Scattering Theory]], [[Ambient Metric Construction]], [[GJMS Operators]] and [[Singular Yamabe Problem]]..) + * [[Boundary Harnack inequality]] it would be good to possibly include this in the description of what is different/same regarding local vs. nonlocal equations. - * It would be wise (once the wiki is more mature) to add pages about the [[Boltzmann equation]], since it is one of the more "classical" and better known integro-differential equations. + * Describe, with references, the connection between [[holder estimates]] of viscosity solutions of stationary and or parabolic equations and the existence and uniqueness of solutions to the relevant [[Martingale Problem]] - * There is also plenty of work on [[Dislocation dynamics]] that we ought to add later on. + * [[Neumann Boundary Conditions]] - * Pages about [[Homogenization]] (local and nonlocal) should appear here too. + * Processes in the "limit" $\alpha=0$, [[Zero Order Operators]] - * Limit of $\sigma$-order operators as $\sigma \to 2^-$, maybe this should go on a page on [[Linear integro-differential operators]]. + * Discussion of the [[Barlow-Bass-Chen-Kassmann Counterexample]] to Regularity of $L$-Harmonic functions. - * Given the recent works of Osher/Gilboa and Bertozzi/Flenner on Ginzburg-Landau  on graphs we should have an article on the natural similarities between non-local operators and [[elliptic operators on graphs]]. + * Discussion of Jean Picard's paper (regularity for pure jump processes with non-degenerate, translation invariant generators) + + * Add Courrège's Structure theorem for operators and other structure theorems (generators of Feller semigroups, Hunt processes... etc) + + * A page on the nonlocal analogue of the thin film equation + + == (partially) Completed tasks == + + * A sort of [[Starting page]] that serves as a "root" for all pages we add (ideally, any page we create should be reachable from here). (UPDATE: See discussion.) + + * Definition of [[viscosity solutions]] for nonlocal equations. Also a discussion on existence using [[Perron's method]] and uniqueness through the [[comparison principle]]. + + * Some general regularity results like [[holder estimates]], [[Harnack inequalities]], [[Aleksandrov-Bakelman-Pucci estimates]], some reference to [[free boundary problems]]. + + * A list of [[regularity results for fully nonlinear integro-differential equations|regularity results]] for [[fully nonlinear integro-differential equations]]. + + * Some discussion on models involving [[Levy processes]] and [[stochastic control]]. + + * The [[surface quasi-geostrophic equation]]. + + * A page about [[semilinear equations]]. + + * [[Nonlocal porous medium equation]]. + + * [[drift-diffusion equations]]. + + * [[Nonlocal minimal surfaces]] and [[Nonlocal mean curvature flow]]. + + * There is also plenty of work on [[Dislocation dynamics]] that we ought to add later on. * Phase transitions involving non-local interactions, in particular, pages about [[Particle Systems]], discussing the Giacomin-Lebowitz theory and the Ohta-Kawasaki functional. * Phase transitions involving non-local interactions, in particular, pages about [[Particle Systems]], discussing the Giacomin-Lebowitz theory and the Ohta-Kawasaki functional. - We may want to include a [[mini second order elliptic wiki]] inside this wiki. + * It is convenient to have a [[mini second order elliptic wiki]] inside this wiki. + + * [[open problems]]. + + * Having a [[list of equations]] may make it easier to navigate the wiki. + + * Jump processes via [[Subordination]] - We may want to have a section on [[open problems]], for example integral ABP for general kernels, harnack for kernels with a + == Wiki Maintenance == - less restrictive bound below, $C^{1,\alpha}$ estimate in bounded domains with a nonsmooth kernel, supercritical quasi-geostrophic, + - classification of nonlocal minimal cones, etc... + - *Fill up the list of [[upcoming events]] such as conferences, workshops, summer schools. + * Get access to LocalSettings.php (ask Maorong for access maybe?) so we can change the page name of the Main Page and the Starting Page (specially since those are the names shown by a google search) + * Fill up the list of [[upcoming events]] such as conferences, workshops, summer schools. - * I have started a [[Literature on Nonlocal Equations]] to dump there all papers we want to reference or are already referencing on the wiki. + * [[User:Nestor|Nestor]] has started a [[Literature on Nonlocal Equations]] to dump there all papers we want to reference or are already referencing on the wiki.

## Things that need to be done

The list below can be a starting point to click on links and edit each page. The following are some of the topics that should appear in this wiki.

• Fractional curvatures in conformal geometry.
• Create a page on Non-local Lagrangians and mention relevant examples, note Non-local Lagrangian is a term used by particle physicists and it is not necessarily the same as a Dirichlet form.
• Nonlocal Phase Field Equations this will include many types of evolution equations such as nonlocal reaction-diffusion, models arising from nonlocal ising models, nonlocal cahn-hilliard, nonlocal biological aggregation, sharp interface limits (giacomin-lebowitz, bates-et-al, de massi-pressutti, etc...)
• Boundary Harnack inequality it would be good to possibly include this in the description of what is different/same regarding local vs. nonlocal equations.
• Describe, with references, the connection between holder estimates of viscosity solutions of stationary and or parabolic equations and the existence and uniqueness of solutions to the relevant Martingale Problem
• Discussion of Jean Picard's paper (regularity for pure jump processes with non-degenerate, translation invariant generators)
• Add Courrège's Structure theorem for operators and other structure theorems (generators of Feller semigroups, Hunt processes... etc)
• A page on the nonlocal analogue of the thin film equation

## (partially) Completed tasks

• A sort of Starting page that serves as a "root" for all pages we add (ideally, any page we create should be reachable from here). (UPDATE: See discussion.)
• Phase transitions involving non-local interactions, in particular, pages about Particle Systems, discussing the Giacomin-Lebowitz theory and the Ohta-Kawasaki functional.

## Wiki Maintenance

• Get access to LocalSettings.php (ask Maorong for access maybe?) so we can change the page name of the Main Page and the Starting Page (specially since those are the names shown by a google search)
• Fill up the list of upcoming events such as conferences, workshops, summer schools.