U+1F01 "ἁ" Greek Small Letter Alpha with Dasia Unicode Character

U+1F01 "ἁ" Greek Small Letter Alpha with Dasia is a polytonic Greek letter that represents the alpha vowel with a rough breathing mark, called a dasia, indicating an initial /h/ sound in ancient Greek pronunciation. This character was used in classical and Hellenistic Greek texts to show aspiration at the start of a word, and it forms part of the Unicode Greek Extended block, which preserves historical orthographic distinctions. In modern Greek, the rough breathing mark is no longer pronounced, but the character remains important for scholarly editions, liturgical texts, and linguistic studies of ancient Greek.

General Properties

Code Point	U+1F01
Version Added	1.1
Name	Greek Small Letter Alpha with Dasia
Block	Greek Extended
General Category	Lowercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Canonical
Decomposition Mapping	"α" U+03B1 Greek Small Letter Alpha "̔" U+0314 Combining Reversed Comma Above

Encodings

HTML Decimal Encoding	ἁ
HTML Hex Encoding	ἁ
UTF-8 Encoding	0xE1 0xBC 0x81
UTF-16 Encoding	0x1F01
UTF-32 Encoding	0x00001F01
C/C++/Java Escape	\u1f01

Unicode Properties

NFC Quick Check	Yes
NFKC Quick Check	Yes
Numeric Type	None
Numeric Value	NaN
Line Break	Alphabetic
Lowercase	Yes
Simple Uppercase Code Point	"Ἁ" U+1F09 Greek Capital Letter Alpha with Dasia
Simple Titlecase Code Point	"Ἁ" U+1F09 Greek Capital Letter Alpha with Dasia
Uppercase Code Point	"Ἁ" U+1F09 Greek Capital Letter Alpha with Dasia
Titlecase Code Point	"Ἁ" U+1F09 Greek Capital Letter Alpha with Dasia
Cased	Yes
Changes When Casemapped	Yes
Changes When Titlecased	Yes
Changes When Uppercased	Yes
Script	Greek
Script Extensions	Greek
Indic Syllabic Category	Other
ID Start	Yes
XID Start	Yes
ID Continue	Yes
XID Continue	Yes
Alphabetic	Yes
Vertical Orientation	Rotated
Grapheme Base	Yes
Grapheme Cluster Break	Other
Word Break	Alphabetic letter
Sentence Break	Lower