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  The Weierstrass functions  ,  ,  , and   have the following simple values at the origin point: 
 
 
 
 The Weierstrass functions  ,  ,  ,  , and   can be represented through elementary functions, when   or  : 
 
 
 At points  , all Weierstrass functions  ,  ,  ,  , and   can be equal to zero or can have poles and be equal to  : 
 
 
 
 
 
 
 
 The values of Weierstrass functions  ,  ,  ,  , and   at the points   can sometimes be evaluated in closed form: 
 
 
 
 
 
 
 
 
 
 
 
 The Weierstrass functions  ,  , and   have rather simple values, when   and   or  : 
 
 
 The Weierstrass functions  ,  ,  , and   can be represented through elementary functions, when  : 
 
 
 
 
 The Weierstrass functions  ,  ,  ,  ,  , and   are analytical functions of  ,  , and  , which are defined in  . The inverse Weierstrass function   is an analytical function of  ,  ,  ,  , which is also defined in  , because   is not an independent variable. 
 
 For fixed  ,   , the Weierstrass functions  ,  , and   have an infinite set of singular points: 
 (a)   are the poles of order 2 with residues 0 (for  ), of order 3 with residues 0 (for  ) and simple poles with residues 1 (for  ). 
 (b)   is an essential singular point. 
 For fixed  ,  , the Weierstrass functions   and   have only one singular point at  .  It is an essential singular point.  
 The Weierstrass functions   and   do not have poles and essential singularities with respect to their variables. 
 
 For fixed  ,  , the Weierstrass functions  ,  ,  ,  , and   do not have branch points and branch cuts. 
 For fixed  ,  , the inverse Weierstrass function   has two branch points:  .  
 For fixed  ,  , the inverse Weierstrass function   has two branch points:  .  
 For fixed  ,  , the inverse Weierstrass function   has four branch points:  .  
 
 The Weierstrass functions   and   are doubly periodic functions with respect to   with periods   and  : 
 
 
 The Weierstrass functions  ,  , and   are quasi‐periodic functions with respect to  : 
 
 
 
 
 
 
 The inverse Weierstrass functions   and    do not have periodicity and symmetry. 
 
 The Weierstrass functions  ,  ,  ,  , and   are the invariant functions under the linear transformation of the half‐periods  ,   with integer coefficients  ,  ,  , and  , satisfying restrictions   (modular transformations): 
 
 
 
 
 
 
 The Weierstrass functions  ,  ,  ,  , and   satisfy the following homogeneity type relations: 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 The Weierstrass functions  ,  ,  ,  ,  , and    have mirror symmetry: 
 
 
 
 The Weierstrass functions   and   are even functions with respect to  : 
 
 
 The Weierstrass functions  ,  , and   are odd functions with respect to  : 
 
 
 
 
 The Weierstrass functions  ,  ,  , and   have the following series expansions at the point  : 
 
 
 
 
 
 
 
 
 
 
 
 The inverse Weierstrass function   has the following series expansion at the point  : 
 
 
 The Weierstrass functions  ,  ,  ,  , and    have the following so-called  ‐series representations: 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 The Weierstrass functions  ,  ,  ,  , and   with   can be represented through series of different forms, for example: 
 
 
 
 
 
 
 
 
 
 
 
 The Weierstrass functions and their inverses  ,  ,  ,  ,  , and   can be represented through the following integrals from elementary or Weierstrass functions: 
 
 
 
 
 
 
 
 
 
 
 
 The Weierstrass functions  ,  , and   have the following product representations: 
 
 
 
 
 
 
 The Weierstrass functions  ,  , and   can be represented as so-called  ‐products by the following formulas: 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 The Weierstrass functions  ,  ,  ,  , and   satisfy numerous relations that can provide transformations of its arguments. One of these transformations simplifies argument   to  , for example: 
 
 
 
 Other transformations are described by so-called addition formulas: 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Half‐angle formulas provide one more type of transformation, for example: 
 
 The Weierstrass functions  ,  ,  , and   satisfy the following double-angle formulas: 
 
 
 
 
 
 
 
 
 
 
 These formulas can be expanded on triple angle formulas, for example: 
 
 
 
 Generally the following multiple angle formulas take place: 
 
 
 
 
 Sometimes transformations have a symmetrical character, which includes operations like determinate, for example: 
 
 
 A special class of transformation includes the simplification of Weierstrass functions  ,  ,  ,  , and   with invariants  , where  , for example: 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 The Weierstrass functions satisfy numerous functional identities, for example: 
 
 
 
 
 
 
 
 
 The first two derivatives of all Weierstrass functions  ,  ,  ,  , and  , and their inverses   and   with respect to variable   can also be expressed through Weierstrass functions: 
 
 
 
 
 
 
 
 
 
 
 The first derivatives of Weierstrass functions  ,  ,  , and   with respect to parameter   can also be expressed through Weierstrass functions by the following formulas: 
 
 
 
 
 The first derivatives of Weierstrass functions  ,  ,  , and   with respect to parameter   can also be expressed through Weierstrass functions by the following formulas: 
 
 
 
 
 Weierstrass invariants   and   can be expressed as functions of half-periods   and  . This property allows obtaining the following formulas for the first derivatives of Weierstrass functions  ,  ,  , and   with respect to half-period  : 
 
 
 
 
 Similar formulas take place for the first derivatives of Weierstrass functions  ,  ,  , and   with respect to half-period  : 
 
 
 
 
 The   derivatives of all Weierstrass functions  ,  ,  ,  ,  , and their inverses   and   with respect to variable   can be represented by the following formulas: 
 
 
 
 
 
 
 
 
 The indefinite integrals of Weierstrass functions  ,  ,  , and   with respect to variable   can be expressed by the following formulas: 
 
 
 
 
 
 Finite and infinite sums including Weierstrass functions can sometimes be evaluated in closed forms, for example: 
 
 
 
 
 The Weierstrass functions  ,  ,  ,  , and their inverses   and   satisfy the following nonlinear differential equations: 
 
 
 
 
 
 
 
 
 
 
 
 
 
 The Weierstrass functions  ,  ,  , and   are the special solutions of the corresponding partial differential equations: 
 
 
 
 
 
 
 
 
 
 
 
 
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