File:ShokaMapT.png

Complex map of the Shoka function, $\mathrm{Shoka}(z)=z-\ln\!\Big( \mathrm e^{-z} +\mathrm e -1 \Big)$ :

$u\!+\! \mathrm i v = \mathrm{Shoka}(x\!+\! \mathrm i y)$

In the cental part, id est, $ |y|<\pi$, the map coincides with that of the Shoko function, $\mathrm{Shoko}(z)=\ln\!\Big(1+ \mathrm e^z (\mathrm e \!-\! 1) \Big)$

C++ generator of curves
Files ado.cin and conto.cin should be loaded in the working directory in order to compile the C++ code below:

using namespace std; typedef complex z_type;
 * 1) include 
 * 2) include 
 * 3) include 
 * 4) define DB double
 * 5) define DO(x,y) for(x=0;x<y;x++)
 * 1) include
 * 1) define Re(x) x.real
 * 2) define Im(x) x.imag
 * 3) define I z_type(0.,1.)
 * 4) include "conto.cin"

// z_type Shoko(z_type z) { return log(1.+exp(z)*(M_E-1.)); } z_type Shoka(z_type z) { return z + log(exp(-z)+(M_E-1.)); }

main{ int j,k,m,n; DB x,y, p,q, t,r; z_type z,c,d; r=log(1./(M_E-1.)); printf("r=%16.14f\n",r); int M=400,M1=M+1; int N=800,N1=N+1; DB X[M1],Y[N1], g[M1*N1],f[M1*N1], w[M1*N1]; // w is working array. char v[M1*N1]; // v is working array FILE *o;o=fopen("ShokaMap.eps","w");ado(o,162,162); fprintf(o,"81 81 translate\n 10 10 scale\n"); DO(m,M1){ t=(m-200)/200.; X[m]=4.005*t*(1.+t*t);} DO(n,N1)Y[n]=-8.+.02*n; for(m=-8;m<9;m++){if(m==0){M(m,-8.5)L(m,8.5)} else{M(m,-8)L(m,8)}} for(n=-8;n<9;n++){    M(  -8,n)L(8,n)} fprintf(o,".008 W 0 0 0 RGB S\n"); DO(m,M1)DO(n,N1){g[m*N1+n]=9999; f[m*N1+n]=9999;} DO(m,M1){x=X[m]; //printf("%5.2f\n",x); DO(n,N1){y=Y[n]; z=z_type(x,y); // c=Tania(z); p=Re(c);q=Im(c); c=Shoka(z); p=Re(c);q=Im(c); if(p>-99. && p<99. && q>-99. && q<99. ){ g[m*N1+n]=p;f[m*N1+n]=q;} }} fprintf(o,"1 setlinejoin 2 setlinecap\n"); p=.8;q=.5; for(m=-10;m<10;m++)for(n=2;n<10;n+=2)conto(o,f,w,v,X,Y,M,N,(m+.1*n),-q, q); fprintf(o,".01 W 0 .6 0 RGB S\n"); for(m=0;m<10;m++) for(n=2;n<10;n+=2)conto(o,g,w,v,X,Y,M,N,-(m+.1*n),-q, q); fprintf(o,".01 W .9 0 0 RGB S\n"); for(m=0;m<10;m++) for(n=2;n<10;n+=2)conto(o,g,w,v,X,Y,M,N, (m+.1*n),-q, q); fprintf(o,".01 W 0 0 .9 RGB S\n"); for(m=1;m<10;m++) conto(o,f,w,v,X,Y,M,N, (0.-m),-p,p); fprintf(o,".05 W .9 0 0 RGB S\n"); for(m=1;m<10;m++) conto(o,f,w,v,X,Y,M,N, (0.+m),-p,p); fprintf(o,".05 W 0 0 .9 RGB S\n"); conto(o,f,w,v,X,Y,M,N, (0. ),-p,p); fprintf(o,".05 W .6 0 .6 RGB S\n"); for(m=-9;m<10;m++) conto(o,g,w,v,X,Y,M,N, (0.+m),-p,p); fprintf(o,".05 W 0 0 0 RGB S\n"); y= M_PI; M(r,y)L(-8.1,y) y=-M_PI; M(r,y)L(-8.1,y) fprintf(o,"0 setlinecap .04 W 1 1 1 RGB S\n"); y= M_PI; for(m=0;m<75;m+=4) {x=r-.1*m; M(x,y) L(x-.12,y)} y=-M_PI; for(m=0;m<75;m+=4) {x=r-.1*m; M(x,y) L(x-.12,y)} fprintf(o,".06 W 1 .5 0 RGB S\n"); y= M_PI; for(m=2;m<75;m+=4) {x=r-.1*m; M(x,y) L(x-.12,y)} y=-M_PI; for(m=2;m<75;m+=4) {x=r-.1*m; M(x,y) L(x-.12,y)} fprintf(o,".06 W 0 .5 1 RGB S\n"); fprintf(o,"showpage\n%c%cTrailer",'%','%'); fclose(o); system("epstopdf ShokaMap.eps"); system(   "open ShokaMap.pdf"); printf("r=%16.14f %16.14f\n",r,sqrt(M_PI*M_PI+r*r)); getchar; system("killall Preview"); }

Latex generator of labels
% file ShokaMap.pdf should be generated with the code above in order to compile the Latex document below.

%  % Gerenator of ShokaMap.png % % Copyleft 2012 by Dmitrii Kouznetsov % \documentclass[12pt]{article} % \usepackage{geometry} % \usepackage{graphicx} % \usepackage{rotating} % \paperwidth 854pt % \paperheight 844pt % \topmargin -96pt % \oddsidemargin -98pt % \textwidth 1100pt % \textheight 1100pt % \pagestyle {empty} % \newcommand \sx {\scalebox} % \newcommand \rot {\begin{rotate}} % \newcommand \ero {\end{rotate}} % \newcommand \ing {\includegraphics} % \begin{document} % \sx{5}{ \begin{picture}(164,165) % \put(6,5){\ing{ShokaMap}} % \put(2,163){\sx{.7}{$y$}} % \put(2,144){\sx{.6}{$6$}} % \put(2,124){\sx{.6}{$4$}} % \put(2,104){\sx{.6}{$2$}} % \put(3,116){\sx{.6}{$\pi$}} % \put(18,161.4){\sx{.8}{$u\!=\!0$}} % \put(11,150){\sx{.8}{$v\!\approx\!2\pi$}} % \put(18,131.2){\sx{.8}{$u\!=\!0$}} % \put(18,115.6){\sx{.8}{\bf cut}} % %\put(120,116.7){\sx{.4}{\bf cut}} % \put(18,100){\sx{.8}{$u\!=\!0$}} % \put(2, 84){\sx{.6}{$0$}} % \put(18, 84){\sx{.8}{$v\!=\!0$}} % \put(18,68){\sx{.8}{$u\!=\!0$}} % \put(-2,64){\sx{.6}{$-2$}} % \put(-2,53){\sx{.6}{$-\pi$}} % \put(18,52.4){\sx{.8}{\bf cut}} % \put(18,36.5){\sx{.8}{$u\!=\!0$}} % \put(11,20.4){\sx{.8}{$v\!\approx\! -\!2\pi$}} % \put(18,7){\sx{.8}{$u\!=\!0$}} % \put(-2,44){\sx{.6}{$-4$}} % \put(-2,24){\sx{.6}{$-6$}} % \put( 22,0){\sx{.6}{$-6$}} % \put( 42,0){\sx{.6}{$-4$}} % \put( 62,0){\sx{.6}{$-2$}} % \put( 86,0){\sx{.6}{$0$}} % \put(106,0){\sx{.6}{$2$}} % \put(126,0){\sx{.6}{$4$}} % \put(146,0){\sx{.6}{$6$}} % \put(164,0){\sx{.7}{$x$}} % \put( 89.8, 77){\rot{90}\sx{.7}{$u\!=\!1$}\ero}% \put(102.4, 77){\rot{90}\sx{.7}{$u\!=\!2$}\ero}% \put(113.4, 77){\rot{90}\sx{.7}{$u\!=\!3$}\ero}% \put(124.0, 77){\rot{90}\sx{.7}{$u\!=\!4$}\ero}% \put(132,154.4){\sx{.8}{$v\!=\!7$}}% \put(132,144.3){\sx{.8}{$v\!=\!6$}}% \put(132,134.3){\sx{.8}{$v\!=\!5$}}% \put(132,124.2){\sx{.8}{$v\!=\!4$}}% \put(132,114.2){\sx{.8}{$v\!=\!3$}}% \put(132,104.2){\sx{.8}{$v\!=\!2$}}% \put(132, 94.2){\sx{.8}{$v\!=\!1$}}% \put(132, 84){\sx{.8}{$v\!=\!0$}}% \put(132, 73.9){\sx{.8}{$v\!=\!-\!1$}}% \put(132, 63.4){\sx{.8}{$v\!=\!-\!2$}}% \put(132, 53.4){\sx{.8}{$v\!=\!-\!3$}}% \put(132, 43.4){\sx{.8}{$v\!=\!-\!4$}}% \put(132, 33.4){\sx{.8}{$v\!=\!-\!5$}}% \put(132, 23.4){\sx{.8}{$v\!=\!-\!6$}}% \put(132, 13.4){\sx{.8}{$v\!=\!-\!7$}}% \end{picture} % } % \end{document}