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v3.22.1

Significant accounting policies (Details Narrative) | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
IfrsStatementLineItems [Line Items] |  |  |
Lease term | 1 year |  |
Tax rate | 34.00% | 34.00% | 34.00%
Program of social integration ("pis") [member] | Teaching Activities [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Tax rate | 0.65% |  |
Program of social integration ("pis") [member] | Non-teaching activities [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Tax rate | 1.65% |  |
Contribution for the financing of social security ("COFINS") [member] | Teaching Activities [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Tax rate | 3.00% |  |
Contribution for the financing of social security ("COFINS") [member] | Non-teaching activities [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Tax rate | 7.60% |  |

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- Definition The applicable income tax rate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2021-01-01 -Paragraph 81 -Subparagraph c -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2021-en-r&anchor=para_81_c_ii&doctype=Standard -URIDate 2021-03-24 + Details
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