Pith Number

pith:HE5C5VHN

pith:2008:HE5C5VHN5RCVGA6WCZZ4667GTD

not attested not anchored not stored refs pending

C^1 actions of the mapping class group on the circle

Kamlesh Parwani

arxiv:0803.4281 v1 · 2008-03-29 · math.DS · math.GT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HE5C5VHN5RCVGA6WCZZ4667GTD}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T01:22:31.113035Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

393a2ed4edec455303d61673cf7be698e7116c3ac30f00c15f2ad2ae9ccf434f

Aliases

arxiv: 0803.4281 · arxiv_version: 0803.4281v1 · doi: 10.48550/arxiv.0803.4281 · pith_short_12: HE5C5VHN5RCV · pith_short_16: HE5C5VHN5RCVGA6W · pith_short_8: HE5C5VHN

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/HE5C5VHN5RCVGA6WCZZ4667GTD \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 393a2ed4edec455303d61673cf7be698e7116c3ac30f00c15f2ad2ae9ccf434f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "04a8979aadfdb634b9e2b63e9cea78fb16540da0ae44b81599231f77366558fd",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2008-03-29T20:17:28Z",
    "title_canon_sha256": "e5bbb37aa1e9100addbd714c608f8b6ff24b00960781f6cf4589e69c20ffd45c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0803.4281",
    "kind": "arxiv",
    "version": 1
  }
}