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Chapter 5, p.172 X sub h in line right above equation (5.31) should be
X sub E h. in u sub h element of X sub E h
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integrand should be $\kappa_0 \nabla (the sum) \cdot \nabla v$.
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Chapter 5, p. 35, the (1/2) that appears on the first equation (unnumbered)
should be replaced by c^O/2
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Chapter 4, p. 8, Exercise 4.1. A_{1,2} should be MINUS 1/2
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Chapter 2, p. 24, Example 2.13. Q_{2,1} should be PLUS 1/sqrt(2)
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Chapter 4, p.7-8, last line page 7, first line page 8, it should be sqrt
of the eigenvalues...
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Chapter 4, p. 19, Exercise 4.5(a): assume that v is in H^1_0 (that is,
vanishes at the endpoints).
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Chapter 4, p. 30-31, Example 4.2 is riddled with errors --- in (4.65) the
w_x^2 should be v_x w_x and there should be no 1/2; top of page 31, the
v should be v_x in the first equation; in (4.67), the terms multiplying
v(0) and v(1) should be evaluated at x = 0 and x =1, respectively.
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Chapter 3, p. 3, the lower limit of integration of the left hand side term
should be "del"-D and not just D.
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Chapter 3, p. 15, Exercise 3.3, it should be + \gamma, not - \gamma.
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Chapter 3, p. 19, Exercise 3.7, equation (3.42), it should be - \kappa
* the normal derivative = g, rather than simply the normal derivative...
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Chapter 2, p. 6, delete last sentence of first (non-full) paragraph, "For
linear spaces X...."
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Chapter 2, p. 6, last y in the first equation should be y2 and not y1.
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Chapter 2, p. 14, line 8, the two R (real) should be C (complex).
Chapter 2, p. 22, two lines before equation (2.58), the line before
(2.58), the line after (2.58), and the line before (2.60), all the R (real)
should be changed to C (complex); 5 substitutions in all.