**Call number** | **Item** |

**Q** | **Science** (Go to start of category) |

**QA** | **Mathematics and Computer Science** (Go to start of category) |

QA370 .E4 | Electronic Journal of Qualitative Theory of Differential Equations (1998-) (full serial archives) |

QA370 .E64 | Electronic Journal of Differential Equations (1993-) (full serial archives) |

QA371 .F73 T7 | A Treatise on Differential Equations, by Andrew Russell Forsyth (page images at Cornell) |

QA371 .H12 1915 | Four Lectures on Mathematics Delivered at Columbia University in 1911, by Jacques Hadamard (page images at Cornell) |

QA371 .H99 1858a | A Treatise on Differential Equations, and on the Calculus of Finite Differences, by J. Hymers (page images at Cornell) |

QA371 .I52 2003 | Inside Out: Inverse Problems and Applications (2003), ed. by Gunther Uhlmann (PDF files with commentary at msri.org) |

QA371 .T68 2013 | Elementary Differential Equations With Boundary Value Problems (free online edition, 2013), by William F. Trench (PDF and LaTeX at trinity.edu) |

QA372 .C88 1889a | A Treatise on Linear Differential Equations, by Thomas Craig (page images at Cornell) |

QA372 .M37 | The Hopf Bifurcation and Its Applications (1976), by Jerrold E. Marsden and Marjorie McCracken (PDF files at Caltech) |

QA372 .O81 1886a | Examples of Differential Equations, With Rules for Their Solution, by George A. Osborne (page images at Cornell) |

QA372 .P13 1897a | Ordinary Differential Equations: An Elementary Text-Book (London and New York: Macmillan, 1897), by James Morris Page (page images at Cornell) |

QA372 .P6 1922 | Differential Equations (New York: John Wiley and Sons, 1922), by H. B. Phillips (PDF at djm.cc) |

QA374 .D96 | Dynamics of Partial Differential Equations (2004-; all articles more than about 4 years old, and some later articles, free to read) (partial serial archives) |

QA374 .S56 | Hilbert Space Methods for Partial Differential Equations, by R. E. Showalter (PDF files at ams.org) |

QA377 .S683 20046 | Existence, Multiplicity, Perturbation, and Concentration Results for a Class of Quasi-Linear Elliptic Problems (EJDE monograph #7, 2006), by Marco Squassina (PDF with commentary at ams.org) |

QA377 .W36 2004 | Palais-Smale Approaches to Semilinear Elliptic Equations in Unbounded Domains (EJDE monograph #6, 2004), by Hwai-chiuan Wang (PDF with commentary at ams.org) |

QA377 .W454 | An Introduction to Multigrid Methods, by Pieter Wesseling (PDF files at mgnet.org) |

QA385 .C18 1903a | Introductory Treatise on Lie's Theory of Finite Continuous Transformation Groups, by John Edward Campbell (page images at Cornell) |

QA385 .C67 1911a | An Introduction to the Lie Theory of One-Parameter Groups, by Abraham Cohen (page images at Cornell) |

QA401 .C48 | The Analysis of Linear Systems (New York et al.: McGraw-Hill, c1963), by Wayne H. Chen (page images at HathiTrust) |

QA401 .W62 1915 | A Course of Modern Analysis: An Introduction to the General Theory of Infinite Processes and of Analytic Functions; With an Account of The Principal Transcendental Functions (second edition; Cambridge, UK: At the University Press, 1915), by E. T. Whittaker and G. N. Watson (multiple formats at archive.org) |

QA401 .W68 | Mathematics for the Physical Sciences (c1962), by Herbert S. Wilf (PDF with commentary here at Penn) |

QA402 .U535 2004 | Unsolved Problems in Mathematical Systems and Control Theory (with problem solutions submitted since first publication in 2004), ed. by Vincent Blondel and Alexandre Megretski (PDF files with commentary at Princeton) |

QA402.3 .V26 | Lecture Notes on Optimization (electronic edition of "Notes on Optimization", 1998), by Pravin Pratap Varaiya (PDF at Berkeley) |

QA402.5 .A27 2008 | Optimization Algorithms on Matrix Manifolds (2008), by P.-A. Absil, R. Mahony, and R. Sepulchre (PDF files with commentary at Princeton) |