最�想学点组合数学,大佬们有没有推荐的书籍(不要太入门,难一点点)? 知乎 Template




You need a modern browser try chrome, to view this.

Background image: Hide Show

View Larger Image Image Credit: zhihu.com






Try and sketch some of theseCamping, Boot, Wrench, Measles, Cherry, Mule, Anteater, Lily, Penguin, Gecko, view more ideas


please wait, the page is loading...

More Sketches

Take a peek at some of the sketches created by our users, are you a sketchite?

anonymous
anonymous
sketch #578 Butterflies


anonymous
anonymous
sketch #5250


anonymous
anonymous
sketch #3698


anonymous
anonymous
sketch #5059 Edward Hopper&#;s &#;Nighthawks&#; by Rosanne Zammit


anonymous
anonymous
sketch #5052 Gorillaz by Rafał Dawid


anonymous
anonymous
sketch #5173 Super Meat Boy by Zorka Edding Giustinianovic


anonymous
anonymous
sketch #4722 Ichigo by Gopal Gopi


anonymous
anonymous
sketch #5094 Squirrel by Mehdi Público


sketchmaster
sketch #2628 Black haired women


anonymous
anonymous
sketch #5140 Jigsaw by Lajla Nygaard Laursen


anonymous
anonymous
sketch #3138 Papa Smurf by Courtney Spragg


anonymous
anonymous
sketch #5125


anonymous
anonymous
sketch #3149 Dude with a sword by Elio Hernandez


Rachel Roe
sketch #2643 Spring chick


anonymous
anonymous
sketch #3479


anonymous
anonymous
sketch #5437 Mikasa from Attack on Titan by Manimarmuthu Muthu


Donara Smbatyan
sketch #1455 donara


anonymous
anonymous
sketch #1418 Dylan Thomas. Chayrolfrypan


Zay Lin
sketch #3399 zay lin


Chris Shrimp Lonsdale
sketch #342 Forest scene


Pascal Quéru
sketch #2479 C 'est qui ? Un rasta qui a manger trop de poulpe farcis. ? Un vieux chanteur de blue grass ? Najdica tomktoo ? A vous de me dire...


anonymous
anonymous
sketch #4881


anonymous
anonymous
sketch #2884 Robot Shimun Yeyo Ahmed


Милен Тревата
sketch #2771 Naruto by Милен Тревата


Na Ruro
sketch #2797 Homer by Na Ruro


anonymous
anonymous
sketch #3590


anonymous
anonymous
sketch #5062


anonymous
anonymous
sketch #5270 Fresh prince by Fatér Szilvia


anonymous
anonymous
sketch #4916

tomski最�想学点组合数学,大佬们有没有推荐的书籍(不要太入门,难一点点)? 知乎 coloring