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Our problems are parabolic and of order\n                    <jats:inline-formula>\n                      <jats:alternatives>\n                        <jats:tex-math>$$\\sigma \\in (0,2)$$<\/jats:tex-math>\n                        <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                          <mml:mrow>\n                            <mml:mi>\u03c3<\/mml:mi>\n                            <mml:mo>\u2208<\/mml:mo>\n                            <mml:mo>(<\/mml:mo>\n                            <mml:mn>0<\/mml:mn>\n                            <mml:mo>,<\/mml:mo>\n                            <mml:mn>2<\/mml:mn>\n                            <mml:mo>)<\/mml:mo>\n                          <\/mml:mrow>\n                        <\/mml:math>\n                      <\/jats:alternatives>\n                    <\/jats:inline-formula>\n                    since they involve fractional Laplace operators\n                    <jats:inline-formula>\n                      <jats:alternatives>\n                        <jats:tex-math>$$(-\\Delta )^{\\sigma \/2}$$<\/jats:tex-math>\n                        <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                          <mml:msup>\n                            <mml:mrow>\n                              <mml:mo>(<\/mml:mo>\n                              <mml:mo>-<\/mml:mo>\n                              <mml:mi>\u0394<\/mml:mi>\n                              <mml:mo>)<\/mml:mo>\n                            <\/mml:mrow>\n                            <mml:mrow>\n                              <mml:mi>\u03c3<\/mml:mi>\n                              <mml:mo>\/<\/mml:mo>\n                              <mml:mn>2<\/mml:mn>\n                            <\/mml:mrow>\n                          <\/mml:msup>\n                        <\/mml:math>\n                      <\/jats:alternatives>\n                    <\/jats:inline-formula>\n                    . They arise e.g.\u00a0in control and game theory as dynamic programming equations \u2013 HJB and Isaacs equation \u2013 and solutions are non-smooth in general and should be interpreted as viscosity solutions. Our approximations are realized as finite-difference quadrature approximations and are 2nd order accurate for all values of\n                    <jats:inline-formula>\n                      <jats:alternatives>\n                        <jats:tex-math>$$\\sigma $$<\/jats:tex-math>\n                        <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                          <mml:mi>\u03c3<\/mml:mi>\n                        <\/mml:math>\n                      <\/jats:alternatives>\n                    <\/jats:inline-formula>\n                    . The accuracy of previous approximations of fractional fully nonlinear equations depend on\n                    <jats:inline-formula>\n                      <jats:alternatives>\n                        <jats:tex-math>$$\\sigma $$<\/jats:tex-math>\n                        <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                          <mml:mi>\u03c3<\/mml:mi>\n                        <\/mml:math>\n                      <\/jats:alternatives>\n                    <\/jats:inline-formula>\n                    and are worse when\n                    <jats:inline-formula>\n                      <jats:alternatives>\n                        <jats:tex-math>$$\\sigma $$<\/jats:tex-math>\n                        <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                          <mml:mi>\u03c3<\/mml:mi>\n                        <\/mml:math>\n                      <\/jats:alternatives>\n                    <\/jats:inline-formula>\n                    is close to 2. We show that the schemes are monotone, consistent,\n                    <jats:inline-formula>\n                      <jats:alternatives>\n                        <jats:tex-math>$$L^\\infty $$<\/jats:tex-math>\n                        <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                          <mml:msup>\n                            <mml:mi>L<\/mml:mi>\n                            <mml:mi>\u221e<\/mml:mi>\n                          <\/mml:msup>\n                        <\/mml:math>\n                      <\/jats:alternatives>\n                    <\/jats:inline-formula>\n                    -stable, and convergent using a priori estimates, viscosity solutions theory, and the method of half-relaxed limits. We also prove a second order error bound for smooth solutions and present many numerical examples.\n                  <\/jats:p>","DOI":"10.1007\/s13235-024-00601-7","type":"journal-article","created":{"date-parts":[[2024,10,28]],"date-time":"2024-10-28T05:22:32Z","timestamp":1730092952000},"page":"383-405","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Discretization of Fractional Fully Nonlinear Equations by Powers of Discrete Laplacians"],"prefix":"10.1007","volume":"15","author":[{"given":"Indranil","family":"Chowdhury","sequence":"first","affiliation":[]},{"given":"Espen R.","family":"Jakobsen","sequence":"additional","affiliation":[]},{"given":"Robin \u00d8","family":"Lien","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2024,10,28]]},"reference":[{"key":"601_CR1","doi-asserted-by":"publisher","first-page":"116","DOI":"10.1017\/CBO9780511809781","volume-title":"L\u00e9vy processes and stochastic calculus","author":"D Applebaum","year":"2009","unstructured":"Applebaum D (2009) L\u00e9vy processes and stochastic calculus. 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