From 15bdb382ee24cbbb332c2234fdd0caf431b18d27 Mon Sep 17 00:00:00 2001
From: MarcoGorelli <33491632+MarcoGorelli@users.noreply.github.com>
Date: Mon, 3 Jul 2023 12:09:47 +0100
Subject: [PATCH 1/2] add some cumulative Column operations

---
 .../dataframe_api/column_object.py            | 26 +++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/spec/API_specification/dataframe_api/column_object.py b/spec/API_specification/dataframe_api/column_object.py
index 40b68b2a..316d0b20 100644
--- a/spec/API_specification/dataframe_api/column_object.py
+++ b/spec/API_specification/dataframe_api/column_object.py
@@ -498,6 +498,32 @@ def var(self, *, skip_nulls: bool = True) -> Scalar:
         dtypes.
         """
 
+    def cummax(self) -> Column:
+        """
+        Reduction returns a Column. Any data type that supports comparisons
+        must be supported. The returned value has the same dtype as the column.
+        """
+
+    def cummin(self) -> Column:
+        """
+        Reduction returns a Column. Any data type that supports comparisons
+        must be supported. The returned value has the same dtype as the column.
+        """
+
+    def cumsum(self) -> Column:
+        """
+        Reduction returns a Column. Must be supported for numerical and
+        datetime data types. The returned value has the same dtype as the
+        column.
+        """
+
+    def cumprod(self) -> Column:
+        """
+        Reduction returns a Column. Must be supported for numerical and
+        datetime data types. The returned value has the same dtype as the
+        column.
+        """
+
     def is_null(self) -> Column:
         """
         Check for 'missing' or 'null' entries.

From 2dd19d76f5ba26de2d46e9d7c39cbf7de3694b0d Mon Sep 17 00:00:00 2001
From: MarcoGorelli <33491632+MarcoGorelli@users.noreply.github.com>
Date: Wed, 5 Jul 2023 15:07:02 +0100
Subject: [PATCH 2/2] update

---
 spec/API_specification/dataframe_api/column_object.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/spec/API_specification/dataframe_api/column_object.py b/spec/API_specification/dataframe_api/column_object.py
index fc014790..11b96ef2 100644
--- a/spec/API_specification/dataframe_api/column_object.py
+++ b/spec/API_specification/dataframe_api/column_object.py
@@ -525,26 +525,26 @@ def var(self, *, correction: int | float = 1, skip_nulls: bool = True) -> Scalar
             Whether to skip null values.
         """
 
-    def cummax(self) -> Column:
+    def cumulative_max(self) -> Column:
         """
         Reduction returns a Column. Any data type that supports comparisons
         must be supported. The returned value has the same dtype as the column.
         """
 
-    def cummin(self) -> Column:
+    def cumulative_min(self) -> Column:
         """
         Reduction returns a Column. Any data type that supports comparisons
         must be supported. The returned value has the same dtype as the column.
         """
 
-    def cumsum(self) -> Column:
+    def cumulative_sum(self) -> Column:
         """
         Reduction returns a Column. Must be supported for numerical and
         datetime data types. The returned value has the same dtype as the
         column.
         """
 
-    def cumprod(self) -> Column:
+    def cumulative_prod(self) -> Column:
         """
         Reduction returns a Column. Must be supported for numerical and
         datetime data types. The returned value has the same dtype as the