This formula is satisfiable because if we set to b to true and a to false, then the whole formula is true. All other assignments make the formula false, but it doesn't change that the formula is satisfiable as long as there is at least one assignment makes the formula true.
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The practical implication: a string like “аpple.com” with Cyrillic а (U+0430) is pixel-identical to “apple.com” in 40+ fonts. The user, the browser’s address bar, and any visual review process all see the same pixels. This is not theoretical. It is a measured property of the font files shipping on every Mac.，详情可参考WPS下载最新地址
My personal laptop is currently a dual-boot setup running Ubuntu Budgie and Windows. I’m enjoying the Budgie Desktop Environment. I’m a big fan of Notepad++, and just started using Obsidian (h/t ZSA Loves and several other ZSA People interviewees).
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