THE CROSS-DISCIPLINARY CONCEPT OF NONLINEARITY AS A TOOL OF SCIENTIFIC COMPETENCE FORMATION IDEAS OF NATURAL SCIENCES AS INSTRUMENTS OF DEVELOPMENT OF RATIONAL PEOPLE THINKING Article GOLUBJEVA OLGA, Minasyan L.A., ODINTSOVA EKATERINA, SIDOROV SERGEJ Anais da Academia Brasileira de Ciencias. Academia Brasileira de Ciencias. Vol. 90. 2018. P. 2181-2185