Text this: Heat conductivity in linear mixing systems

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| \  / ||   / _ \\  |      \\   / _ \\  \ \\ / // 
|  \/  ||  / //\ \\ |  --  //  | / \ ||  \ \/ //  
| .  . || |  ___  |||  --  \\  | \_/ ||   \  //   
|_|\/|_|| |_||  |_|||______//   \___//     \//    
`-`  `-`  `-`   `-` `------`    `---`       `