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Qual é o equivalente de zero em algarismos romanos?

Os algarismos romanos foram criados para facilitar atividades como comércio, registros e medições; porém, muitos questionam sobre a existência do zero nesse sistema.

Os algarismos romanos, criados na Roma Antiga, são um sistema numérico que utiliza letras para representar valores. Diferente do sistema decimal que usamos hoje, ele se baseia em princípios de adição e subtração, como no caso de IV (4) ou IX (9).

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Porém, uma curiosidade surge quando pensamos no número zero: será que os romanos tinham uma forma de representá-lo? Vamos explorar essa questão neste artigo.

Qual número equivale ao zero em algarismos romanos?

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Como é zero em romanos, por que o zero não existe no algarismo romano, o que significa zero em algarismos romanos, quando o zero surgiu.

O zero é um número essencial para a matemática, embora não fosse representado no sistema de algarismos romanos. Foto: Reprodução / Pexels

Ao contrário de outros sistemas numéricos antigos, os romanos não tinham um símbolo específico para o zero. Isso porque seu sistema era baseado em sete símbolos principais:

  • I = 1;
  • V = 5;
  • X = 10;
  • L = 50;
  • C = 100;
  • D = 500;
  • M = 1.000.

Eles combinavam esses símbolos para formar outros números, usando adição (ex.: XII = 12) ou subtração (ex.: IX = 9). Mas e o zero? Bem, ele simplesmente não existia como um numeral romano.

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Apesar disso, os romanos precisavam indicar a ausência de quantidade em situações práticas, como na manutenção de registros. Para isso, usavam as palavras latinas “nulla” ou “nihil“, que significam “nada” ou “nenhum”.

Essas palavras eram abreviadas como N e serviam como marcadores de posição, mas não tinham função matemática. Era mais uma forma de expressar “vazio” do que um número propriamente dito.

E o zero, quando surgiu?

Um estudo de 2017, publicado no periódico científico History of Science in South Asia, revelou que o zero é muito mais antigo do que se acreditava.

Cientistas da Universidade de Oxford usaram datação por carbono para analisar o manuscrito Bakhshali, um antigo texto indiano escrito em casca de bétula.

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Eles descobriram que o manuscrito data do século III ou IV, o que significa que o símbolo do zero já era usado na Índia há mais de 1.700 anos, tornando este o registro mais antigo do uso deste número.

O documento foi encontrado em 1881 em uma vila chamada Bakhshali, no atual Paquistão. Ele é composto por 70 folhas frágeis de casca de bétula, que foram datadas de três períodos diferentes.

Como o zero foi representado no Manuscrito Bakhshali?

No manuscrito, o zero era representado por um ponto, que servia como um “espaço reservado” para indicar ordens de magnitude, como 10, 100 ou 1.000.

O documento contém centenas desses pontos, mostrando que o conceito já era bem estabelecido na época.

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Antes dessa pesquisa, acreditava-se que o primeiro uso registrado do zero era uma inscrição do século IX em um templo em Gwalior, na Índia. A nova descoberta antecipa o surgimento do zero em 500 anos, o que tem um grande significado histórico e matemático.

Várias culturas antigas, como os maias e os babilônios, também usavam conceitos semelhantes ao zero. No entanto, foi na Índia que ele se tornou um número usado para se referir a ausência de quantidade, evoluindo de um simples ponto para o algarismo que usamos hoje.

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