Pith Number

pith:DAX2JZWO

pith:2014:DAX2JZWOGGSUCRB7UYWKN2QJNL

not attested not anchored not stored refs pending

A finite presentation for the automorphism group of the first homology of a non-orientable surface over $\mathbb Z_2$ preserving the mod $2$ intersection form

Genki Omori, Ryoma Kobayashi

arxiv:1410.7138 v2 · 2014-10-27 · math.GT · math.GR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DAX2JZWOGGSUCRB7UYWKN2QJNL}

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	2026-05-18T02:19:35.931011Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

182fa4e6ce31a541443fa62ca6ea096af5f25b3e23bb5184f5481b0ac77c6c77

Aliases

arxiv: 1410.7138 · arxiv_version: 1410.7138v2 · doi: 10.48550/arxiv.1410.7138 · pith_short_12: DAX2JZWOGGSU · pith_short_16: DAX2JZWOGGSUCRB7 · pith_short_8: DAX2JZWO

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/DAX2JZWOGGSUCRB7UYWKN2QJNL \
  | 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: 182fa4e6ce31a541443fa62ca6ea096af5f25b3e23bb5184f5481b0ac77c6c77

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b4a72e30409dc06aedbcadbd0bab4f9118670723f68b5c3ad40b399f0c0892ac",
    "cross_cats_sorted": [
      "math.GR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2014-10-27T07:19:55Z",
    "title_canon_sha256": "f652008a0304ff47fe22309db168652114c465226fb4cc6b1909f9c858720194"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1410.7138",
    "kind": "arxiv",
    "version": 2
  }
}