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, 25)
After
Valuation ORIGINAL a terminal factorization product = 25
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, 25, 25, 0, 25, []]
After
derived = [25, 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(52, 2)
After
Valuation ORIGINAL b ORIGINAL division step1 = 26
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, 52, 52, 1]
After
derived = [26, 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(26, 2)
After
Valuation ORIGINAL b ORIGINAL division step2 = 13
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, 52, 26, 2]
After
derived = [13, 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 terminal factorization product := mul(4, 13)
After
Valuation ORIGINAL b terminal factorization product = 52
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 · implies
Before
source roles = [Valuation ORIGINAL b, 2, -52, 52, 2, 13, [2, 4]]
After
derived = [52, 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, S010
S012 · calculation
Before
Valuation ORIGINAL a times b := mul(25, -52)
After
Valuation ORIGINAL a times b = -1300
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, S011
S013 · calculation
Before
Valuation ACTUAL product ORIGINAL division step1 := div(1300, 2)
After
Valuation ACTUAL product ORIGINAL division step1 = 650
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 · 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, S013
S015 · implies
Before
source roles = [Valuation ACTUAL product, 2, 1300, 1300, 1]
After
derived = [650, 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, S014
S016 · calculation
Before
Valuation ACTUAL product ORIGINAL division step2 := div(650, 2)
After
Valuation ACTUAL product ORIGINAL division step2 = 325
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 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, S016
S018 · implies
Before
source roles = [Valuation ACTUAL product, 2, 1300, 650, 2]
After
derived = [325, 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, S017
S019 · calculation
Before
Valuation ACTUAL product terminal factorization product := mul(4, 325)
After
Valuation ACTUAL product terminal factorization product = 1300
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 · implies
Before
source roles = [Valuation ACTUAL product, 2, -1300, 1300, 2, 325, [2, 4]]
After
derived = [1300, 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, S019
S021 · calculation
Before
Valuation ORIGINAL exponent addition := sum(0, 2)
After
Valuation ORIGINAL exponent addition = 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, S020
S022 · implies
Before
source roles = [2, 25, -52, 0, 2, 25, 13]
After
derived = [-1300, 2, 2, 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, S021