Weak

Computing

• A weak entity
  Weak entity
  In a relational database, a Weak Entity is an entity that cannot be uniquely identified by its attributes alone; therefore, it must use a foreign key in conjunction with its attributes to create a primary key...
  
   is a database entity that cannot be uniquely identified by its own attributes alone.
• A weak reference
  Weak reference
  In computer programming, a weak reference is a reference that does not protect the referent object from collection by a garbage collector. An object referenced only by weak references is considered unreachable and so may be collected at any time. Weak references are used to avoid keeping in memory...
  
   is a reference that does not protect the referent object from collection by the garbage collector.
• A weak symbol
  Weak symbol
  In computing, a weak symbol is a symbol definition in an object file or dynamic library that may be overridden by other symbol definitions, its value will be zero if no definition found by loader.Example :source of libfoo.so :...
  
   is a symbol definition in an object file
  Object file
  In computer science, an object file is an organised collection of named objects, and typically these objects are sequences of computer instructions in a machine code format, which may be directly executed by a computer's CPU. Object files are typically produced by a compiler as a result of...
  
   or dynamic library that may be overridden by other symbol definitions.

Music

• "Weak" (SWV song), a song by SWV
• "Weak" (Skunk Anansie song), a song by Skunk Anansie

Science

• Weak nuclear force, one of the four fundamental forces of nature
• Weak convergence (Hilbert space)
  Weak convergence (Hilbert space)
  In mathematics, weak convergence in a Hilbert space is convergence of a sequence of points in the weak topology.-Definition:A sequence of points in a Hilbert space H is said to converge weakly to a point x in H if...
  
   of a sequence in a Hilbert space
• Weak derivative
  Weak derivative
  In mathematics, a weak derivative is a generalization of the concept of the derivative of a function for functions not assumed differentiable, but only integrable, i.e. to lie in the Lebesgue space . See distributions for an even more general definition.- Definition :Let be a function in the...
  
   defined on Sobolev spaces
• Weak topology
  Weak topology
  In mathematics, weak topology is an alternative term for initial topology. The term is most commonly used for the initial topology of a normed vector space or topological vector space with respect to its dual...
  
   of functional analysis:
  • Weak topology (polar topology)
    Weak topology (polar topology)
    In functional analysis and related areas of mathematics the weak topology is the coarsest polar topology, the topology with the fewest open sets, on a dual pair...
    
    
  • Weak operator topology
    Weak operator topology
    In functional analysis, the weak operator topology, often abbreviated WOT, is the weakest topology on the set of bounded operators on a Hilbert space H such that the functional sending an operator T to the complex number is continuous for any vectors x and y in the Hilbert...
    
    
  • Weak-star topology
    Weak-star topology
    The weak-star topology can refer to*it is a topology related to the weak topology.*it is a specific weak-star topology on the set of bounded operators on a Hilbert space; see Weak-star operator topology.*a Star network topology in networking....
    
    

Miscellaneous

• Weak inflection
  Weak inflection
  In grammar, the term weak is used in opposition to the term strong to designate a conjugation or declension when a language has two parallel systems...
  
  
• "Weak" (Law & Order: Special Victims Unit)
  Weak (Law & Order: Special Victims Unit)
  "Weak" is an Emmy Award-winning episode of Law & Order: Special Victims Unit. It originally aired on November 30, 2004. B. D. Wong does not appear in this episode.-Episode recap:...
  
  , an episode of Law & Order: Special Victims Unit
• Muscle weakness
  Muscle weakness
  Muscle weakness, also known as muscle fatigue, is a direct term for the inability to exert force with one's muscles to the degree that would be expected given the individual's general physical fitness. A test of strength is often used during a diagnosis of a muscular disorder before the etiology...
  
  
• Strict weak ordering
  Strict weak ordering
  In mathematics, especially order theory, a strict weak ordering is a binary relation < on a set S that is a strict partial order in which the relation "neither a < b nor b < a" is transitive.The equivalence classes of this "incomparability relation" partition the elements of S, and...