# sum rule

## sum rule

[′səm ‚rül]
(quantum mechanics)
A formula for a transition between energy levels in which the sum of the transition strengths is expressed in a simple form.
References in periodicals archive ?
The encryption process is fully combined with chaos theory and DNA coding theory, by using the chaotic sequence of values, to encode by DNA, and the DNA addition rule of choice.
(10) According to (2), generate the sequence of c, and apply a dynamic selection of the eight types of DNA addition rules. Then apply the addition operation on matrix [I.sub.4] and matrix [I.sub.5] to obtain matrix [I.sub.6].
Also, what addition rule should be used for superluminal speeds?
Because genotypes RR and Rr both produce round seeds, the proportion of progeny with round seeds (using the addition rule) is 1/4 + 1/2 = 3/4.
For the addition rule to apply, the events must be mutually exclusive, which means that both events cannot occur simultaneously.
For the addition rule, students are asked the following question: What is the probability of rolling a single die and obtaining either a 4 or a 6?
We can assume that the weight losses in the first step fulfilll the addition rule as well.
The parameters fulfill the addition rule, mainly in case of the peak temperature ([PT.sub.vm]) at which the maximum combustion of volatile matter occurs.
With respect to Sec.593 the Tax Court held, in The Home Group, Inc., 91 TC 265 (1988), that Sec 593 "grants wide latitude and complete discretion to taxpayers to decide the amount of available reserves they wish to claim in any year, not to exceed the statute's limits." The Tax Courts decision in Home Group challenges the validity of the minimum addition rule under Regs.
may be used in a subsequent year." Also, Letter Rulings (TAMs) 8009003 and 8031062 held that a \$1 addition to the reserve was permissible in years prior to the effective date of the minimum addition rules, even though a much larger deduction was allowable.
Wherever possible, give reasons--maybe using a model, as in the case of the even-odd addition rules. Mathematical reasoning at school will not be the same as a mathematician would use--we need explanations appropriate to students' development.
An annual review of the constituents was conducted in line with the deletion and addition rules of each index, with consideration for the delisting of some constituents due to the formation of holding companies, the publisher of the Nihon Keizai Shimbun financial daily and various other publications.

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