Step-by-step derivation
S001 · implies
Before
source roles = [pval-product-additivity]
After
derived = [[p, a, b, valuation_a, valuation_b, product, valuation_product, sum_of_valuations, additivity, infinity_convention]]
Conditions: none
List the complete source field order and mode-specific roles without JavaScript or answer-shape inference;No,undefined and infinity retain their distinct meanings.
Step identifiers and dependencies
Rule: source_ordered_fields_without_JS · Uses: G001
S002 · calculation
Before
Valuation ORIGINAL a terminal factorization product := mul(1, 19)
After
Valuation ORIGINAL a terminal factorization product = 19
Conditions: none
Substitute original roles and established intermediates exactly;no approximation,slot substitution or internally consistent changed operand.
Step identifiers and dependencies
Rule: exact_rational_arithmetic · Uses: G001, S001
S003 · implies
Before
source roles = [Valuation ORIGINAL a, 2, 19, 19, 0, 19, []]
After
derived = [19, 1, Yes, Yes]
Conditions: none
At termination p does not divide the unit,so p^(k+1) does not divide |a| and k is maximal.A sign does not affect divisibility;the factorization is for |a|,not negative a equalling a positive product.
Step identifiers and dependencies
Rule: Valuation_terminal_NONdivisible_unit_highest_power · Uses: G001, S002
S004 · calculation
Before
Valuation ORIGINAL b ORIGINAL division step1 := div(40, 2)
After
Valuation ORIGINAL b ORIGINAL division step1 = 20
Conditions: none
Substitute original roles and established intermediates exactly;no approximation,slot substitution or internally consistent changed operand.
Step identifiers and dependencies
Rule: exact_rational_arithmetic · Uses: G001, S003
S005 · calculation
Before
Valuation ORIGINAL b dividing prime power1 := mul(1, 2)
After
Valuation ORIGINAL b dividing prime power1 = 2
Conditions: none
Substitute original roles and established intermediates exactly;no approximation,slot substitution or internally consistent changed operand.
Step identifiers and dependencies
Rule: exact_rational_arithmetic · Uses: G001, S004
S006 · implies
Before
source roles = [Valuation ORIGINAL b, 2, 40, 40, 1]
After
derived = [20, 2, 0, Yes]
Conditions: none
Divide only when the current unit is divisible by p.Each step preserves |a|=p^k*unit and strictly decreases the positive unit,so it terminates.Derived integers do not inherit the raw-input1e6 cap.
Step identifiers and dependencies
Rule: Valuation_EACH_division_source_remainder_and_factor_invariant · Uses: G001, S005
S007 · calculation
Before
Valuation ORIGINAL b ORIGINAL division step2 := div(20, 2)
After
Valuation ORIGINAL b ORIGINAL division step2 = 10
Conditions: none
Substitute original roles and established intermediates exactly;no approximation,slot substitution or internally consistent changed operand.
Step identifiers and dependencies
Rule: exact_rational_arithmetic · Uses: G001, S006
S008 · calculation
Before
Valuation ORIGINAL b dividing prime power2 := mul(2, 2)
After
Valuation ORIGINAL b dividing prime power2 = 4
Conditions: none
Substitute original roles and established intermediates exactly;no approximation,slot substitution or internally consistent changed operand.
Step identifiers and dependencies
Rule: exact_rational_arithmetic · Uses: G001, S007
S009 · implies
Before
source roles = [Valuation ORIGINAL b, 2, 40, 20, 2]
After
derived = [10, 4, 0, Yes]
Conditions: none
Divide only when the current unit is divisible by p.Each step preserves |a|=p^k*unit and strictly decreases the positive unit,so it terminates.Derived integers do not inherit the raw-input1e6 cap.
Step identifiers and dependencies
Rule: Valuation_EACH_division_source_remainder_and_factor_invariant · Uses: G001, S008
S010 · calculation
Before
Valuation ORIGINAL b ORIGINAL division step3 := div(10, 2)
After
Valuation ORIGINAL b ORIGINAL division step3 = 5
Conditions: none
Substitute original roles and established intermediates exactly;no approximation,slot substitution or internally consistent changed operand.
Step identifiers and dependencies
Rule: exact_rational_arithmetic · Uses: G001, S009
S011 · calculation
Before
Valuation ORIGINAL b dividing prime power3 := mul(4, 2)
After
Valuation ORIGINAL b dividing prime power3 = 8
Conditions: none
Substitute original roles and established intermediates exactly;no approximation,slot substitution or internally consistent changed operand.
Step identifiers and dependencies
Rule: exact_rational_arithmetic · Uses: G001, S010
S012 · implies
Before
source roles = [Valuation ORIGINAL b, 2, 40, 10, 3]
After
derived = [5, 8, 0, Yes]
Conditions: none
Divide only when the current unit is divisible by p.Each step preserves |a|=p^k*unit and strictly decreases the positive unit,so it terminates.Derived integers do not inherit the raw-input1e6 cap.
Step identifiers and dependencies
Rule: Valuation_EACH_division_source_remainder_and_factor_invariant · Uses: G001, S011
S013 · calculation
Before
Valuation ORIGINAL b terminal factorization product := mul(8, 5)
After
Valuation ORIGINAL b terminal factorization product = 40
Conditions: none
Substitute original roles and established intermediates exactly;no approximation,slot substitution or internally consistent changed operand.
Step identifiers and dependencies
Rule: exact_rational_arithmetic · Uses: G001, S012
S014 · implies
Before
source roles = [Valuation ORIGINAL b, 2, -40, 40, 3, 5, [2, 4, 8]]
After
derived = [40, 1, Yes, Yes]
Conditions: none
At termination p does not divide the unit,so p^(k+1) does not divide |a| and k is maximal.A sign does not affect divisibility;the factorization is for |a|,not negative a equalling a positive product.
Step identifiers and dependencies
Rule: Valuation_terminal_NONdivisible_unit_highest_power · Uses: G001, S013
S015 · calculation
Before
Valuation ORIGINAL a times b := mul(19, -40)
After
Valuation ORIGINAL a times b = -760
Conditions: none
Substitute original roles and established intermediates exactly;no approximation,slot substitution or internally consistent changed operand.
Step identifiers and dependencies
Rule: exact_rational_arithmetic · Uses: G001, S014
S016 · calculation
Before
Valuation ACTUAL product ORIGINAL division step1 := div(760, 2)
After
Valuation ACTUAL product ORIGINAL division step1 = 380
Conditions: none
Substitute original roles and established intermediates exactly;no approximation,slot substitution or internally consistent changed operand.
Step identifiers and dependencies
Rule: exact_rational_arithmetic · Uses: G001, S015
S017 · calculation
Before
Valuation ACTUAL product dividing prime power1 := mul(1, 2)
After
Valuation ACTUAL product dividing prime power1 = 2
Conditions: none
Substitute original roles and established intermediates exactly;no approximation,slot substitution or internally consistent changed operand.
Step identifiers and dependencies
Rule: exact_rational_arithmetic · Uses: G001, S016
S018 · implies
Before
source roles = [Valuation ACTUAL product, 2, 760, 760, 1]
After
derived = [380, 2, 0, Yes]
Conditions: none
Divide only when the current unit is divisible by p.Each step preserves |a|=p^k*unit and strictly decreases the positive unit,so it terminates.Derived integers do not inherit the raw-input1e6 cap.
Step identifiers and dependencies
Rule: Valuation_EACH_division_source_remainder_and_factor_invariant · Uses: G001, S017
S019 · calculation
Before
Valuation ACTUAL product ORIGINAL division step2 := div(380, 2)
After
Valuation ACTUAL product ORIGINAL division step2 = 190
Conditions: none
Substitute original roles and established intermediates exactly;no approximation,slot substitution or internally consistent changed operand.
Step identifiers and dependencies
Rule: exact_rational_arithmetic · Uses: G001, S018
S020 · calculation
Before
Valuation ACTUAL product dividing prime power2 := mul(2, 2)
After
Valuation ACTUAL product dividing prime power2 = 4
Conditions: none
Substitute original roles and established intermediates exactly;no approximation,slot substitution or internally consistent changed operand.
Step identifiers and dependencies
Rule: exact_rational_arithmetic · Uses: G001, S019
S021 · implies
Before
source roles = [Valuation ACTUAL product, 2, 760, 380, 2]
After
derived = [190, 4, 0, Yes]
Conditions: none
Divide only when the current unit is divisible by p.Each step preserves |a|=p^k*unit and strictly decreases the positive unit,so it terminates.Derived integers do not inherit the raw-input1e6 cap.
Step identifiers and dependencies
Rule: Valuation_EACH_division_source_remainder_and_factor_invariant · Uses: G001, S020
S022 · calculation
Before
Valuation ACTUAL product ORIGINAL division step3 := div(190, 2)
After
Valuation ACTUAL product ORIGINAL division step3 = 95
Conditions: none
Substitute original roles and established intermediates exactly;no approximation,slot substitution or internally consistent changed operand.
Step identifiers and dependencies
Rule: exact_rational_arithmetic · Uses: G001, S021
S023 · calculation
Before
Valuation ACTUAL product dividing prime power3 := mul(4, 2)
After
Valuation ACTUAL product dividing prime power3 = 8
Conditions: none
Substitute original roles and established intermediates exactly;no approximation,slot substitution or internally consistent changed operand.
Step identifiers and dependencies
Rule: exact_rational_arithmetic · Uses: G001, S022
S024 · implies
Before
source roles = [Valuation ACTUAL product, 2, 760, 190, 3]
After
derived = [95, 8, 0, Yes]
Conditions: none
Divide only when the current unit is divisible by p.Each step preserves |a|=p^k*unit and strictly decreases the positive unit,so it terminates.Derived integers do not inherit the raw-input1e6 cap.
Step identifiers and dependencies
Rule: Valuation_EACH_division_source_remainder_and_factor_invariant · Uses: G001, S023
S025 · calculation
Before
Valuation ACTUAL product terminal factorization product := mul(8, 95)
After
Valuation ACTUAL product terminal factorization product = 760
Conditions: none
Substitute original roles and established intermediates exactly;no approximation,slot substitution or internally consistent changed operand.
Step identifiers and dependencies
Rule: exact_rational_arithmetic · Uses: G001, S024
S026 · implies
Before
source roles = [Valuation ACTUAL product, 2, -760, 760, 3, 95, [2, 4, 8]]
After
derived = [760, 1, Yes, Yes]
Conditions: none
At termination p does not divide the unit,so p^(k+1) does not divide |a| and k is maximal.A sign does not affect divisibility;the factorization is for |a|,not negative a equalling a positive product.
Step identifiers and dependencies
Rule: Valuation_terminal_NONdivisible_unit_highest_power · Uses: G001, S025
S027 · calculation
Before
Valuation ORIGINAL exponent addition := sum(0, 3)
After
Valuation ORIGINAL exponent addition = 3
Conditions: none
Substitute original roles and established intermediates exactly;no approximation,slot substitution or internally consistent changed operand.
Step identifiers and dependencies
Rule: exact_rational_arithmetic · Uses: G001, S026
S028 · implies
Before
source roles = [2, 19, -40, 0, 3, 19, 5]
After
derived = [-760, 3, 3, Yes]
Conditions: none
For nonzero factors write a=±p^r*u,b=±p^s*v.Primality and Euclid lemma keep uv indivisible by p,so the exact exponent is r+s.If either factor is0,the product is0 and the same infinity convention applies.A derived product may reach1e12 while remaining SAFE;do not reapply the raw1e6 bound.
Step identifiers and dependencies
Rule: Valuation_GENERAL_product_primeness_unit_product_or_zero · Uses: G001, S027