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              Abstract
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 We give a new proof of the 
 conjecture in genus 
. We use
 a description of the class 
 as a linear combination of boundary strata and show the conjecture follows
 inductively from applications of the projection formula, string equation, and dilaton
 equation.
  
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              Keywords
              
                moduli, Hodge integrals, $\lambda_g$ conjecture,
                tautological classes
               
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              Mathematical Subject Classification
              
                Primary: 14H10, 14N35
               
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              Milestones
              
                Received: 30 November 2022
               
              
                Revised: 10 March 2023
               
              
                Accepted: 16 March 2023
               
              
                Published: 17 July 2024
                
              
                Communicated by Michael Jablonski
               
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