Pith Number

pith:RPCRM5E6

pith:2019:RPCRM5E6R2Q5NFKWNNUOQSSBER

not attested not anchored not stored refs pending

Unchaining surgery and topology of symplectic 4-manifolds

Kenta Hayano, Naoyuki Monden, R. Inanc Baykur

arxiv:1903.02906 v2 · 2019-03-07 · math.GT · math.SG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RPCRM5E6R2Q5NFKWNNUOQSSBER}

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	2026-05-17T23:51:29.584897Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8bc516749e8ea1d695566b68e84a41246a1171fd06e88f6b91542efa034172db

Aliases

arxiv: 1903.02906 · arxiv_version: 1903.02906v2 · doi: 10.48550/arxiv.1903.02906 · pith_short_12: RPCRM5E6R2Q5 · pith_short_16: RPCRM5E6R2Q5NFKW · pith_short_8: RPCRM5E6

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/RPCRM5E6R2Q5NFKWNNUOQSSBER \
  | 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: 8bc516749e8ea1d695566b68e84a41246a1171fd06e88f6b91542efa034172db

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "123a3221103b2d32484cfb2cabe0e138fce214a9296a8c993e8629bdd1822365",
    "cross_cats_sorted": [
      "math.SG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2019-03-07T13:46:59Z",
    "title_canon_sha256": "84622f1e2cde7f47024d7f4c7d0be5c5add56da1f434167bce33256336438c05"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.02906",
    "kind": "arxiv",
    "version": 2
  }
}