1521 gluing subintervals together and/or omitting some of the rightmost subintervals.

  1521 gluing subintervals together and/or omitting some of the rightmost subintervals.

  1522 (See Figure \ref{fig:lmar}.)

  1522 (See Figure \ref{fig:lmar}.)

  1523 \begin{figure}[t]$$

  1523 \begin{figure}[t]$$

  1524 \definecolor{arcolor}{rgb}{.75,.4,.1}

  1524 \definecolor{arcolor}{rgb}{.75,.4,.1}

  1525 \begin{tikzpicture}

  1525 \begin{tikzpicture}

  1526 \fill (0,0) circle (.1);

  1527 \fill (0,0) circle (.1);

  1527 \draw (0,0) -- (2,0);

  1528 \draw (0,0) -- (2,0);

  1528 \draw (1,0.1) -- (1,-0.1);

  1529 \draw (1,0.1) -- (1,-0.1);

  1529 

  1530 

  1530 \draw [->, arcolor] (1,0.25) -- (1,0.75);

  1531 \draw [->, arcolor] (1,0.25) -- (1,0.75);

  1532 \fill (0,1) circle (.1);

  1533 \fill (0,1) circle (.1);

  1533 \draw (0,1) -- (2,1);

  1534 \draw (0,1) -- (2,1);

  1534 \end{tikzpicture}

  1535 \end{tikzpicture}

  1535 \qquad

  1536 \qquad

  1536 \begin{tikzpicture}

  1537 \begin{tikzpicture}

  1537 \fill (0,0) circle (.1);

  1539 \fill (0,0) circle (.1);

  1538 \draw (0,0) -- (2,0);

  1540 \draw (0,0) -- (2,0);

  1539 \draw (1,0.1) -- (1,-0.1);

  1541 \draw (1,0.1) -- (1,-0.1);

  1540 

  1542 

  1541 \draw [->, arcolor] (1,0.25) -- (1,0.75);

  1543 \draw [->, arcolor] (1,0.25) -- (1,0.75);

  1543 \fill (0,1) circle (.1);

  1545 \fill (0,1) circle (.1);

  1544 \draw (0,1) -- (1,1);

  1546 \draw (0,1) -- (1,1);

  1545 \end{tikzpicture}

  1547 \end{tikzpicture}

  1546 \qquad

  1548 \qquad

  1547 \begin{tikzpicture}

  1549 \begin{tikzpicture}

  1548 \fill (0,0) circle (.1);

  1551 \fill (0,0) circle (.1);

  1549 \draw (0,0) -- (3,0);

  1552 \draw (0,0) -- (3,0);

  1550 \foreach \x in {0.5, 1.0, 1.25, 1.5, 2.0, 2.5} {

  1553 \foreach \x in {0.5, 1.0, 1.25, 1.5, 2.0, 2.5} {

  1551 	\draw (\x,0.1) -- (\x,-0.1);

  1554 	\draw (\x,0.1) -- (\x,-0.1);

  1552 }

  1555 }