 Title Pages
 Let $\tau :\mathbb{N}\to \mathbb{Z}$ be defined by
 Contents
 Preface
 Acknowledgments
 Author information
 Dependencies between the chapters

Chapter One Introduction, main results, context 
Chapter Two Modular curves, modular forms, lattices, Galois representations 
Chapter Three First description of the algorithms 
Chapter Four Short introduction to heights and Arakelov theory 
Chapter Five Computing complex zeros of polynomials and power series 
Chapter Six Computations with modular forms and Galois representations 
Chapter Seven Polynomials for projective representations of level one forms 
Chapter Eight Description of X_{1}(5l) 
Chapter Nine Applying Arakelov theory 
Chapter Ten An upper bound for Green functions on Riemann surfaces 
Chapter Eleven Bounds for Arakelov invariants of modular curves 
Chapter Twelve Approximating V_{f} over the complex numbers 
Chapter Thirteen Computing V_{f} modulo p 
Chapter Fourteen Computing the residual Galois representations 
Chapter Fifteen Computing coefficients of modular forms  Epilogue
 Bibliography
 Index
Polynomials for projective representations of level one forms
Polynomials for projective representations of level one forms
 Chapter:
 (p.159) Chapter Seven Polynomials for projective representations of level one forms
 Source:
 Computational Aspects of Modular Forms and Galois Representations
 Author(s):
Johan Bosman
 Publisher:
 Princeton University Press
This chapter explicitly computes modℓ Galois representations attached to modular forms. To be precise, it looks at cases with l ≤ 23, and the modular forms considered will be cusp forms of level 1 and weight up to 22. The chapter presents the result in terms of polynomials associated with the projectivized representations. As an application, it will improve a known result on Lehmer's nonvanishing conjecture for Ramanujan's tau function.
Keywords: modular forms, Galois representations, cusp forms, polynomials, Ramanujan's tau function, Lehmer, nonvanishing conjecture
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 Title Pages
 Let $\tau :\mathbb{N}\to \mathbb{Z}$ be defined by
 Contents
 Preface
 Acknowledgments
 Author information
 Dependencies between the chapters

Chapter One Introduction, main results, context 
Chapter Two Modular curves, modular forms, lattices, Galois representations 
Chapter Three First description of the algorithms 
Chapter Four Short introduction to heights and Arakelov theory 
Chapter Five Computing complex zeros of polynomials and power series 
Chapter Six Computations with modular forms and Galois representations 
Chapter Seven Polynomials for projective representations of level one forms 
Chapter Eight Description of X_{1}(5l) 
Chapter Nine Applying Arakelov theory 
Chapter Ten An upper bound for Green functions on Riemann surfaces 
Chapter Eleven Bounds for Arakelov invariants of modular curves 
Chapter Twelve Approximating V_{f} over the complex numbers 
Chapter Thirteen Computing V_{f} modulo p 
Chapter Fourteen Computing the residual Galois representations 
Chapter Fifteen Computing coefficients of modular forms  Epilogue
 Bibliography
 Index