In mathematics, the associative property is a property of some binary operations, which means that rearranging the parentheses in an expression will not change the result. In propositional logic, associativity is a valid rule of replacement for expressions in logical proofs.
The men's 4 × 100 metres relay at the 2013 World Championships in Athletics was held at the Luzhniki Stadium on 18 August.
The men's 4 x 400 metres relay at the 2014 IAAF World Relays was held at the Thomas Robinson Stadium on 24–25 May.
The women's 4 × 100 metres relay at the 2014 IAAF World Relays was held at the Thomas Robinson Stadium on 24 May.
The women's 4 × 400 metres relay at the 2014 IAAF World Relays was held at the Thomas Robinson Stadium on 24 and 25 May.
The women's 800 metres event at the 2014 World Junior Championships in Athletics was held in Eugene, Oregon, USA, at Hayward Field on 22, 23 and 24 July.
The men's 4 x 400 metres relay event at the 2014 World Junior Championships in Athletics was held in Eugene, Oregon, USA, at Hayward Field on 26 and 27 July.
The women's 4 x 400 metres relay event at the 2014 World Junior Championships in Athletics was held in Eugene, Oregon, USA, at Hayward Field on 26 and 27 July.
The women's 100 metres at the 2014 European Athletics Championships took place at the Letzigrund on 12 and 13 August. Dutch runner Dafne Schippers won gold in 11.12 seconds.
The women's 200 metres at the 2014 European Athletics Championships took place at the Letzigrund on 14 and 15 August.
The women's 400 metres at the 2014 European Athletics Championships took place at the Letzigrund on 12, 13, and 15 August.
The women's 800 metres at the 2014 European Athletics Championships took place at the Letzigrund on 13, 14, and 16 August.
The women's 100 metres hurdles at the 2014 European Athletics Championships have taken place at the Letzigrund on 12 and 13 August.
The women's 400 metres hurdles at the 2014 European Athletics Championships took place at the Letzigrund on 13, 14 and 16 August.
The men's 400 metres hurdles at the 2014 European Athletics Championships took place at the Letzigrund on 12, 13 and 15 August.
The men's 400 metres at the 2014 European Athletics Championships took place at the Letzigrund on 12, 13, and 15 August.
The men's 800 metres at the 2014 European Athletics Championships took place at the Letzigrund on 12, 13, and 15 August.
The men's 110 metres hurdles at the 2014 European Athletics Championships took place at the Letzigrund on 13 and 14 August.
The men's 4 x 100 metres relay at the 2014 European Athletics Championships took place at the Letzigrund on 16 and 17 August.
The men's 100 metres at the 2015 World Championships in Athletics was held at the Beijing National Stadium on 22 and 23 August.
