关于Friedmann方程经典解的注记
Note on the classical solutions of Friedmann's equation
摘要：
当人们考虑宇宙的年龄时，经典弗里德曼模型的图形表示往往是误导的。就年龄而言，大多数教科书忽视了表征中的概念差异。我们讨论的尺度因子与时间函数的弗里德曼的解决方案的时间范围内，包括年龄的模型宇宙的细节。
英文摘要：
Graphical representations of classical Friedmann's models are often misleading when one considers the age of the universe. Most textbooks disregard conceptual differences in the representations, as far as ages are concerned. We discuss the details of the scale-factor versus time function for Friedmann's solutions in the time range that includes the ages of model universes.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
