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Groups, conics and recurrence relations

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 03 July 2023, pp. 193203

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The repayment of financial debt: some mathematical considerations

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 03 July 2023, pp. 204217

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How effective is the efficiency gap?

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 03 July 2023, pp. 218224

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Yet more characterisations of parallelograms

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 03 July 2023, pp. 225233

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The lost boarding pass problem: converse results

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 03 July 2023, pp. 234240

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Integer triangles with integer circumradii

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 03 July 2023, pp. 241248

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Developing new picture proofs that the sums of the first n odd integers are squares

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 03 July 2023, pp. 249262

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A graph related to the Euler ø function

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 03 July 2023, pp. 263272

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Approximating Lipschitz and continuous functions by polynomials; Jackson’s theorem

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 03 July 2023, pp. 273285

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Matter for Debate
What makes a good maths teacher?

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 03 July 2023, pp. 286300

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Notes
107.14 Does a trapezium exist whose side lengths form a geometric progression?

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 03 July 2023, pp. 301302

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107.15 Fruit diophantine equation

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 03 July 2023, pp. 302306

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107.16 An expression for the primecomposite characteristic function

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 03 July 2023, pp. 306307

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107.17 Two curios related to lattice polygons

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 03 July 2023, pp. 307312

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107.18 A twovariable approach to some standard optimisation problems

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 03 July 2023, pp. 312316

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107.19 A quadratic harmonic approximation

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 03 July 2023, pp. 316320

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107.20 Euler’s constant and the speed of convergence

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 03 July 2023, pp. 320323

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107.21 Proof Without Words: An inverse tangent inequality

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 03 July 2023, pp. 323324

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107.22 Quick proofs of two inequalities related to the digamma function

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 03 July 2023, pp. 324327

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107.23 Location of the inarc circle and its point of contact with the circumcircle

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 03 July 2023, pp. 327331

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