English: The figure shows an example of saddle-node bifurcation. Th three curves means the graphs of the ordinary differential equation

${\displaystyle {\frac {dx}{dt}}=\mu +x-e^{x}}$

for three cases of parameter μ. The bifurcation occurs at (x = 0, μ = 1). The equation and the bifurcation point is based on the reference:

• 桑村 雅隆、2015、『パターン形成と分岐理論 ―自発的パターン発生の力学系入門』初版、共立出版〈シリーズ・現象を解明する数学〉 ISBN 978-4-320-11004-5