| <html xmlns='http://www.w3.org/1999/xhtml'> | |
| <head> | |
| <title>Under</title> | |
| </head> | |
| <body> | |
| <p id='t1'>under: | |
| <math xmlns='http://www.w3.org/1998/Math/MathML'> | |
| <munder> | |
| <mi>B</mi> | |
| <mi>x</mi> | |
| </munder> | |
| </math> | |
| </p> | |
| <p id='t2'>under: | |
| <math xmlns='http://www.w3.org/1998/Math/MathML'> | |
| <munder> | |
| <mi>B</mi> | |
| <mi>X</mi> | |
| </munder> | |
| </math> | |
| </p> | |
| </body> | |
| </html> |