New top story on Hacker News: Problems in Linear Algebra (1978), a book of solved problems

New top story on Hacker News: Google cancelled a talk on caste bias

New top story on Hacker News: Bristle (YC W21) Is hiring to analyze the oral microbiome and prevent disease

New top story on Hacker News: Show HN: I made a deceptively simple but hard sliding puzzle

New top story on Hacker News: Rejecting data demands, ExpressVPN removes VPN servers in India

New top story on Hacker News: Show HN: Common Lisp running natively over WebAssembly for the first time ever

New top story on Hacker News: 1k True Fans? Try 100