yingtai https://blog.hatena.ne.jp/yingtai/ Quae legeris memento https://eta.hatenablog.com/ logic Peter Geach (1972) Logic Matters, Basil Blackwell. Ch.7. "Identity Theory", 238-249. (First published in Review of Metaphysics 21(1), 1967 & 22(3), 1969.) Wiggins, SSR の批判対象のひとつ．さしあたり SEP の "Relative Identity", esp. §5 が参考になりそう． 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Feta.hatenablog.com%2Fentry%2F2020%2F01%2F24%2F235612" title="同一性の相対性 Geach (1967) &quot;Identity&quot; - Quae legeris memento" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2020-01-24 23:56:12 rich https://eta.hatenablog.com/entry/2020/01/24/235612 1.0 100%