Research article

Further generalization of Walker’s inequality in acute triangles and its applications

  • Received: 06 July 2020 Accepted: 18 August 2020 Published: 25 August 2020
  • MSC : 51M16

  • In this paper, we prove a generalization of Walker's inequality in acute (non-obtuse) triangles by using Euler's inequality, Ciamberlini's inequality and a result due to the author, from which a number of corollaries are obtained. We also present three conjectured inequalities involving sides of an acute (non-obtuse) triangle and one exponent as open problems.

    Citation: Jian Liu. Further generalization of Walker’s inequality in acute triangles and its applications[J]. AIMS Mathematics, 2020, 5(6): 6657-6672. doi: 10.3934/math.2020428

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  • In this paper, we prove a generalization of Walker's inequality in acute (non-obtuse) triangles by using Euler's inequality, Ciamberlini's inequality and a result due to the author, from which a number of corollaries are obtained. We also present three conjectured inequalities involving sides of an acute (non-obtuse) triangle and one exponent as open problems.


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    [1] C. Ciamberlini, Sulla condizione necessaria e sufficiente affinch un triangolo sia acutangolo, rettangolo oottusangolo, B. Unione Mat. Ital., 5 (1943), 37-41.
    [2] A. W. Walker, Problem E2388, Am. Math. Mon., 79 (1972), 1135.
    [3] D. S. Mitrinovic, J. E. Pečarić, V. Volence, Recent Advances in Geometric Inequalities, Contributions to Nonlinear Functional Analysis, Dordrecht, The Netherlands, Boston: Kluwer Academic Publishers, 1989.
    [4] Y. D. Wu, Z. H. Zhang, Y. R. Zhang, Proving inequalities in acute triangle with difference substitution, Inequal. Pure Appl. Math., 8 (2007), Art. 81, 1-10.
    [5] X. Z. Yang, An inequality for non-obtuse triangles, Middle School Math., 4 (1996), 30-32. (in Chinese)
    [6] C. Shan. Geometric inequalities in China, In: S. L. Chen, Inequalities involving R, r and s in acute triangles, Nan Jing: Jiangsu Educational Publishing Press, 1996.
    [7] J. Liu, Sharpened versions of the Erdös-Mordell inequality, J. Inequal. Appl., 206 (2015), 1-12.
    [8] J. Liu, An improved result of a weighted trigonometric inequality in acute triangles with applications, J. Math. Inequal., 14 (2020), 147-160.
    [9] J. Liu, An inequality involving geometric elments R, r and s in non-obtuse triangles, Teaching Mon., 7 (2010), 51-53. (in Chinese)
    [10] W. J. Blundon, Inequalities associated with the triangle, Can. Math. Bull., 8 (1965), 615-626. doi: 10.4153/CMB-1965-044-9
    [11] S. H. Wu, A sharpened version of the fundamental triangle inequality, Math. Inequal. App., 11 (2008), 477-482.
    [12] D. Andrica, C. Barbu, A geometric proof of Blundon's Inequalities, Math. Inequal. App., 15 (2012), 361-370.
    [13] D. Andrica, C. Barbu, L. I. Piscoran, The geometric proof to a sharp version of Blundon's inequalities, J. Math. Inequal., 10 (2016), 1137-1143.
    [14] S. H. Wu, Y. M. Chu, Geometric interpretation of Blundon's inequality and Ciamberlini's inequality, J. Inequal. Appl., 381 (2014), 1-18.
    [15] O. Bottema, R. Z. Djordjević, R. R. Janić, et al. Geometic Ineqalities, Groningen: WoltersNoordhoff Press, 1969.
    [16] J. Liu, Two new weighted Erdös-Mordell inequality, Discrete Comput Geom., 598 (2018), 707-724.
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  • © 2020 the Author(s), licensee AIMS Press. This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0)
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