Yirong Liu Books

Planar Dynamical Systems
Planar Dynamical Systems

By Yirong Liu

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This book presents in an elementary way the recent significant developments in the qualitative theory of planar dynamical systems. The subjects are covered as follows: the studies of center and iso...

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Planar Dynamical Systems
Planar Dynamical Systems

By Yirong Liu

Average: 0.00, 0 Ratings

This book presents in an elementary way the recent significant developments in the qualitative theory of planar dynamical systems. The subjects are covered as follows: the studies of center and iso...

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Hua deng
Hua deng

By Yirong Liu

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If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.

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