UInt can be used in exponent (in pow) now.

kmath-core/src/commonMain/kotlin/space/kscience/kmath/operations/Algebra.kt

@@ -259,6 +259,8 @@ public fun <T> Ring<T>.pow(base: T, exponent: ULong): T = when {
     else -> powWithoutOptimization(base, exponent)
 }
 
+public fun <T> Ring<T>.pow(base: T, exponent: UInt): T = pow(base, exponent.toULong())
+
 private fun <T> Ring<T>.powWithoutOptimization(base: T, exponent: ULong): T = when (exponent) {
     0UL -> one
     1UL -> base

kmath-core/src/commonMain/kotlin/space/kscience/kmath/operations/BigInt.kt

@@ -99,6 +99,7 @@ public class BigInt internal constructor(
     }
 
     public fun pow(other: ULong): BigInt = BigIntField { pow(this@BigInt, other) }
+    public fun pow(other: UInt): BigInt = BigIntField { pow(this@BigInt, other) }
 
     public operator fun times(other: Int): BigInt = when {
         other > 0 -> this * kotlin.math.abs(other).toUInt()

kmath-core/src/commonTest/kotlin/space/kscience/kmath/operations/BigIntAlgebraTest.kt

@@ -26,7 +26,12 @@ internal class BigIntAlgebraTest {
     fun testKBigIntegerRingPow() {
         BigIntField {
             for (num in -5..5)
-                for (exponent in 0UL..10UL)
+                for (exponent in 0U..10U) {
+                    assertEquals(
+                        num.toDouble().pow(exponent.toInt()).toLong().toBigInt(),
+                        num.toBigInt().pow(exponent.toULong()),
+                        "$num ^ $exponent"
+                    )
                     assertEquals(
                         num.toDouble().pow(exponent.toInt()).toLong().toBigInt(),
                         num.toBigInt().pow(exponent),
@@ -34,6 +39,7 @@ internal class BigIntAlgebraTest {
                     )
                 }
         }
+    }
 
     @Test
     fun testKBigIntegerRingSum_100_000_000__100_000_000() {