diff --git a/index.qmd b/index.qmd
index 45d3ea2..e10b99d 100644
--- a/index.qmd
+++ b/index.qmd
@@ -1,15 +1 @@
-# Preface {.unnumbered}
-
-This is a Quarto book.
-
-To learn more about Quarto books visit <https://quarto.org/docs/books>.
-
-```{r}
-1 + 1
-```
-
-@adler2019 This is a ciation @administ
-
-[@abhyankar2012] [@abhyankar2012]
-
-@aiken2009
+# Introduction