The 229Th nucleus has an isomeric state at an energy of about 8 eV above the ground state, several orders of magnitude lower than typical nuclear excitation energies. This has inspired the development of a field of low-energy nuclear physics in which
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自动微分:科学计算与人工智能的交叉 (Auto Differentiation) 解析微分 需要使用计算机代数 (CAS), 又称“符号计算系统” 最著名的软件:Mathematica Python 中的符号计算库:sympy Sympy 做解析函数微分 Step1: 定义自变量符号 Step2: 定义解析函数的形式 Step3: 使用 sympy.diff 函数返回函数的微分结果 import sympy #...
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