Irish Mathematical Society

Cumann Matamaitice na hÉireann

BULLETIN Number 38 Easter 1997

ISSN 0791-5578

Contents

• IMS Officers and Local Represenattives ......... ii
• Notes on Applying for IMS Nenbership ......... iii
• Minutes of IMS meeting 20.12.96 ..................... 1
• The IMS September Meeting 1996 ................
  ... D. H. Armitage, A. W. Wickstead .............. 5
• Comments on Two Papers by R. Gow in the
  December 1995 IMS Bulletin...... R. Gow ........ 8

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• Articles
• A Linear System of Impulsive Differential
  Equations .. Micheal Brennan,
  Finbarr Holland ....................... 9
• Why Phonon Lines Don't Cross .........
  ............ John Gough ................ 21
• The Role of Mathematical Modelling
  in Undergraduate Courses ...................
  ............. S. K. Houston ............ 30
• An Approach to the Natural Logarithm
  Function .. Finbarr Holland ..... 39
• Toronto Spaces, Minimality, and a
  Theorem of Sierpiñski ..........................
  ............ Eoin Coleman .............. 53

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• Research Announcements
• Linear Enhancements ... Neil Madden,
  Martin Stynes ........................... 66
• A Uniformly Convergent Galerkin
  Method ................Martin Stynes,
  Eugene O'Riordan ...................... 67
• The Midpoint Upwind Scheme ...........
  ............... Martin Stynes,
  Hans-Görg Roos ........................ 68

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• Book Review
• Introduction to Coding Theory (second
  edition) by J. H. van Lint ........................
  ..... Pat Fitzpatrick ......... 69