| Subject | English | Catalan |
| environ. | cause for concern principle Principle connected with the precautionary principle: it means that, if there are strong reasons for expecting serious or irreversible damage to the environment following a given project, lack of full scientific certainty should not be used as a reason for postponing cost-effective measures to prevent environmental degradation. Critics of this approach are concerned about large commitments of resources to deal with vaguely defined problems | causa per al principi d'alerta |
| math. | coherency principle | principi de coherència |
| environ. | community-pays principle A tenet of environmental policy, according to which the costs of ecological challenges, environmental quality improvements and the removal of environmental hazards are allotted to community groups or local corporations and, thereby, to the general public | principi de pagament comunitari |
| math. | conditionality principle | principi de condicionalitat |
| environ. | co-operation principle | principi de cooperació |
| math. | Grenander's uncertainty principle | principi d'incertesa de Grenander |
| math. | invariance principle | teorema de Donsker |
| math. | invariance principle | teorema central del límit funcional |
| math. | invariance principle | principi d'invariància |
| math. | likelihood principle | principi de la versemblança |
| math. | maximum entropy principle | principi de l'entropia màxima |
| math. | minimax principle | principi minimax |
| math. | minimax regret principle | principi de la pèrdua minimax |
| math. | missing information principle | principi d'informació desapareguda |
| math. | missing information principle | algorisme d'autoconsistència d'Efron |
| environ. | polluter-pays principle The principle that those causing pollution should meet the costs to which it gives rise | principi contaminador-pagador |
| environ. | precautionary principle Principle adopted by the UN Conference on Environment and Development (1992) that in order to protect the environment, a precautionary approach should be widely applied, meaning that where there are threats of serious or irreversible damage to the environment, lack of full scientific certainty should not be used as a reason for postponing cost-effective measures to prevent environmental degradation | principi preventiu |
| math. | principle of parsimony | principi de parsimònia |
| environ. | principle of sustainability Principle stated by the World Commission on Environment and Development (The Bruntland Commission) in 1987: development that meets the needs of the present without compromising the needs of future generations. Sustainable development is a process of integrating economic, social and ecological goals, and should not mean a trade-off between the environment and development. Sustainable development should imply balance rather than conflict | principi de continuïtat |
| environ. | subsidiary principle The fundamental doctrine or tenet that policy making decisions should be made at the most decentralized level, in which a centralized governing body would not take action unless it it is more effective than action taken at a lower government level | principi subsidiari |
| environ. | trinity of principles trias of environmental policy principles: precautionary, originator (polluter-pays) and cooperation principle; Three fundamental principles of environmental policy: precautionary principle, polluter pays-principle and cooperation principle | trinitat de principis |