https://ph01.tci-thaijo.org/index.php/ThaiJPhys <p><strong>Thai Journal of Physics is an official peer-reviewed journal of Thai Physics Society devoted to theoretical and experimental research on as well as applied physics in an interdisciplinary context. </strong></p> <p><strong>Thai Journal of Physics is published 2 issues a year, in a continuous publication format. The journal welcomes the submission in either Thai or English. The diamond open access publishing model means no article processing charges (APC) for authors.</strong></p> Thai Physics Society en-US Thai Journal of Physics 0857-1449 https://ph01.tci-thaijo.org/index.php/ThaiJPhys/article/view/268102 <p>We rearrange a formal derivation of some permutation symbol identities which are useful in physics.</p> Chankit Khanchong Copyright (c) 2026 Thai Journal of Physics 2026-06-24 2026-06-24 43 1