just isn't shut underneath subtraction (that is certainly, subtracting 1 natural from A different doesn't constantly bring about another natural), means that N displaystyle mathbb N 「関家の森」ではなく「関さんの森」というところがいいですね。親しみを感じます。 Yes,'non-' (or 'non–', which as @tchrist's solution tells you is surely an ingenious and stylish neopunctism for resolving som... https://orderayurvedicsupplements.water.blog/2025/09/03/natural-health-products-in-india-trusted-cureayu-solutions/