![]() ![]() And letters of different type treatments continue to be vital to higher and higher-level mathematics. The complaint “why are there letters in my math?” is practically a cliche at this point. Even if you’re not a particular math enthusiast, you still know about the point where math starts to introduce letters as variables. So what mathematical purpose does the set of mathematical alphabets serve? This varies enormously. This doesn’t rely on handwriting or cumbersome image files. Someone in the United States can type math in plain text form via their keyboard, and transmit it to a colleague in China or India in a format they can easily render and translate if needed. When mathematical symbols are included in Unicode, they become far more accessible to the entire world. The set was introduced in Unicode 3.1 in 2001. What is this new symbol, though? Why is it in Unicode? Well, the Unicode symbol dates back to 1999, when experts Murray Sargent III and Barbara Beeton proposed including a wider set of mathematical alphabets in Unicode. (It also has the ghost of Twitter’s hiring page.) But on the main site, all of this branding has been replaced with a sans serif rendering of □. As I’m writing this, the About Twitter subdomain still has the original materials, logo, and even the browser tab icon of the blue bird. The specific light blue color of Twitter is part of its branding. Twitter has been associated with a bird mascot since almost its inception, and a different version of the bird icon began appearing on the site in 2009. Play icon The triangle icon that indicates to play The branding materials show that the bird is made by coloring in the overlaps made by dozens of concentric circles, and the rules define exactly how it can be used by third parties. Twitter’s most recent version of the bird logo has a rationale (PDF) that is way less batty, but not necessarily less studied. You may remember the 2008 Pepsi rebranding that included a design ideas PDF titled “Breathtaking”. Corporate logos for gigantic, international culture shifters like Twitter are an even bigger deal. Why the Bird MattersĬorporate logos are a big deal. This also seems to mean that Elon Musk chose just one character, typed in a regular font, as the logo to replace the decade-plus-old Twitter logo that’s recognizable around the world. Social media is on fire this week, following the very sudden rebranding of Twitter as just “X,” or, to be specific, “□.” This decorative-looking version of the letter X is part of the extended character set known as Unicode, which means it was introduced at some point with a purpose. The “Twitter X” dates back to 2001 as part of Unicode.The previous logo was refined over more than a decade and heavily regulated online.Twitter’s new logo is a Unicode character from a math alphabets subset. ![]()
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