books berry space
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# Paragraph Do you know about space?
# How do astronauts live in space?
# Where is the space?
# Who made the first trip into space?
# When did the first plane fly into space?
# What was the first animal to travel to space?
# What was the first animal to go into space?
# Why did scientists put a telescope in space?
# What does the earth look like from space?
# How many aliens have gone into space?
# Who is the first woman to walk in space?
# Who was the first person to walk in space?
# Who was the first person to sleep in space?
# Who is the first man to swim in space?
# What is the digital space?
# Shakes Berry
# La Petite Berry
# Land space
# space passports
# space station
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Source: wikipedia.org
فضاء بير (Info)
يطلق على أي فضاء طوبولوجي اسم فضاء بير إذا كانت كل التقاطعات في مجموعة منتهية لمفتوح كثيف كثيفة.
سمي هذا المبدأ الرياضي على اسم عالم الرياضيات الفرنسي رينيه لوي بير René-Louis Baire.
مبرهنة بير
- الفضاء الطبولوجي محليا مضغوط هو فضاء بير.
- الفضاء المتري الكامل (أيضا فضاء بناخ) هو فضاء بير.
اقرأ أيضاً
- مبرهنة أبيري
- فضاء باناخ
