<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>x</mml:mi><mml:mtext>−</mml:mtext><mml:mi>y</mml:mi></mml:mrow></mml:math> swap for a (2, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="in

We continue the study of 2D gravity—“matrix model” duality on the example of a <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mo stretchy="false">(</a:mo><a:mn>2</a:mn><a:mo>,</a:mo><a:mn>2</a:mn><a:mi>p</a:mi><a:mo>+</a:mo><a:mn>1</a:mn><a:mo stretchy="false">)</a:mo></a:math> minimal string. We propose a reformulation of the duality, related to a more conventional one by “<e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"><e:mrow><e:mi>x</e:mi><e:mtext>−</e:mtext><e:mi>y</e:mi></e:mrow></e:math> swap” in the language of topological recursion. This formulation elucidates some conceptual and technical difficulties in the dictionary of the duality and relation to other examples. In particular, it allows to circumvent the necessity to use “resonance transformations,” which were previously introduced to match the world sheet and “matrix model” correlators, and the expressions for minimal string amplitudes in this approach are reminiscent of the ones obtained recently for “complex Liouville string” theory. Using this new approach, we also formulate a conjecture on how one can compute amplitudes with operators other than tachyons in the dual theory.