群论在凝聚态物理中的应用：揭示基本性质与对称性变换

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《2008_Book_GroupTheory》是一本专门应用于凝聚态物理的书籍，由M.S. Dresselhaus、G.Dresselhaus和A.Jorio合著。这本书深入探讨了群论在物理学中的核心地位，特别是其如何揭示物理过程中的对称性原则。作者强调，对称性是物理学中最基本和重要的概念之一，它体现在空间的平移对称性导致动量守恒等基本原理上。 群论在物理中的应用主要围绕着对称性操作如何通过线性代数简化，这一转换极大地增强了我们理解和分析物理系统的效率。书中引入了“表示”概念，即将对称性的抽象概念与矩阵和基函数联系起来，通过一系列简单的定理，我们可以确定并理解物理系统的基本性质。这些性质包括但不限于态的本征特性以及本征值的多重性，它们都取决于对称性条件。 这本书提供了131幅图表和219张表格，详尽地展示了群论如何用于描述物质的各种物理性质，如电子结构、晶格振动（声子）和相变过程中的对称性变化。它涵盖了广泛的主题，从晶体结构到超导体、磁性材料和光学性质，所有这些都是基于对称性原理进行分析的。 读者通过本书不仅可以掌握群论的基本原理，还能学习如何将这些理论应用于实际问题，解决固体物理学中的复杂问题。此外，版权信息指出，本书受德国版权法保护，复制或再利用必须遵循该法律的规定。 《2008_Book_GroupTheory》是一本深入研究和实践群论在凝聚态物理领域的权威教材，适合物理学家、材料科学家和相关领域的研究生作为参考工具，帮助他们理解并利用对称性来解析复杂的物理现象。

group theory

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group theory for physics

Group Theory Lecture by D.Vvedensky from Imperial College London.pdf

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Group Theory Lecture by D.Vvedensky from Imperial College London

Visual Group Theory

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群论的可视化，英文版： If you are interested in learning about group theory in a relaxed, intuitive way, then this book is for you.

old.js.zonayed.me::open_book::open_book::open_book:学习完整JavaScript和最有用的技巧:party_popper:孟加拉语:open_book::open_book::open_book:

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该项目是通过引导的。 您将在下面找到一些有关如何执行常见任务的信息。 您可以在找到本指南的最新版本。目录自动格式化代码更改页面<title>... 使用AJAX请求获取数据与API后端集成节点Ruby on Rails 在开发中...

OPENGL_BOOK.rar_OPENGL_BOOK_OPENGL_BOOK.rar _flip book open_open

2022-09-14 上传
通过OPENGL模拟书的翻页，代码中含有详细解说。适合菜鸟，

book_borrow_system.zip_Book 2_book borrow_book_borrow system_图书借

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图书借阅管理系统采用MVC模式，主要实现了以下功能：1、三类用户：系统管理员、图书管理员、借阅者；2、系统管理员管理图书管理员和借阅者，包括添加，删除，修改功能3、图书管理员添加、更新、删除图书；...

_art___art__https___dataxujing.github.io_jy_book__jy_book.zip

2024-09-03 上传
_art___art__https___dataxujing.github.io_jy_book__jy_book

class Book: def __init__(self, title, author, isbn): self.title = title self.author = author self.isbn = isbn def __str__(self): return f"{self.title} by {self.author}"class Library: def __init__(self): self.books = [] def add_book(self, book): self.books.append(book) def search_book_by_title(self, title): results = [] for book in self.books: if title.lower() in book.title.lower(): results.append(book) return results def search_book_by_author(self, author): results = [] for book in self.books: if author.lower() in book.author.lower(): results.append(book) return results def checkout_book(self, book): if book in self.books: self.books.remove(book) return book else: return None def return_book(self, book): self.books.append(book) return book# sample usagebook1 = Book('The Great Gatsby', 'F. Scott Fitzgerald', '978-0743273565')book2 = Book('To Kill a Mockingbird', 'Harper Lee', '978-0446310789')book3 = Book('1984', 'George Orwell', '978-0451524935')library = Library()library.add_book(book1)library.add_book(book2)library.add_book(book3)print(library.search_book_by_title('the'))print(library.search_book_by_author('scott fitzgerald'))book4 = Book('Pride and Prejudice', 'Jane Austen', '978-0486284736')library.add_book(book4)print(library.search_book_by_author('Jane Austen'))checked_out = library.checkout_book(book4)print(f"Book checked out: {checked_out}")returned = library.return_book(book4)print(f"Book returned: {returned}")能不能标识解释作用

2023-05-24 上传
这是一个 Python 代码示例，其中定义了两个类：`Book` 和 `Library`。 `Book` 类表示一本书，具有三个属性：`title`（书名），`author`（作者）和 `isbn`（ISBN 号码）。它还有一个 `__str__()` 方法，用于返回一个...

class Book: def init(self, title, author, isbn): self.title = title self.author = author self.isbn = isbn def str(self): return f"{self.title} by {self.author}" class Library: def init(self): self.books = [] def add_book(self, book): self.books.append(book) def search_book_by_title(self, title): results = [] for book in self.books: if title.lower() in book.title.lower(): results.append(book) return results def search_book_by_author(self, author): results = [] for book in self.books: if author.lower() in book.author.lower(): results.append(book) return results def checkout_book(self, book): if book in self.books: self.books.remove(book) return book else: return None def return_book(self, book): self.books.append(book) return book # sample usage book1 = Book('The Great Gatsby', 'F. Scott Fitzgerald', '978-0743273565') book2 = Book('To Kill a Mockingbird', 'Harper Lee', '978-0446310789') book3 = Book('1984', 'George Orwell', '978-0451524935') library = Library() library.add_book(book1) library.add_book(book2) library.add_book(book3) print(library.search_book_by_title('the')) print(library.search_book_by_author('scott fitzgerald')) book4 = Book('Pride and Prejudice', 'Jane Austen', '978-0486284736') library.add_book(book4) print(library.search_book_by_author('Jane Austen')) checked_out = library.checkout_book(book4) print(f"Book checked out: {checked_out}") returned = library.return_book(book4) print(f"Book returned: {returned}")，在程序中写上注释

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# 定义一个 Book 类来表示一本书 class Book: def __init__(self, title, author, isbn): self.title = title self.author = author self.isbn = isbn def __str__(self): return f"{self.title} by {self....

class Book: def __init__(self, title, author, isbn, available=True): self.title = title self.author = author self.isbn = isbn self.available = available class Library: def __init__(self, books=None): if books is None: books = [] self.books = books def add_book(self, book): self.books.append(book) def remove_book(self, book): self.books.remove(book) def search_book_by_title(self, title): return [book for book in self.books if book.title == title] def search_book_by_author(self, author): return [book for book in self.books if book.author == author] def search_book_by_isbn(self, isbn): return [book for book in self.books if book.isbn == isbn] def checkout_book(self, book): if book.available: book.available = False return True else: return False def return_book(self, book): book.available = True if __name__ == '__main__': library = Library() book1 = Book('The Great Gatsby', 'F. Scott Fitzgerald', '978-0143129453') book2 = Book('To Kill a Mockingbird', 'Harper Lee', '978-0446310789') book3 = Book('1984', 'George Orwell', '978-0451524935') library.add_book(book1) library.add_book(book2) library.add_book(book3) print(library.search_book_by_title('1984'))修正优化

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class Book: def __init__(self, title, author, isbn, available=True): self.title = title self.author = author self.isbn = isbn self.available = available class Library: def __init__(self, books=...
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