Pith Number

pith:EA54YCOG

pith:2014:EA54YCOGB7BUOYUANNMVVMXJZT

not attested not anchored not stored refs pending

Automorphisms of the mapping class group of a nonorientable surface

B{\l}a\.zej Szepietowski, Ferihe Atalan

arxiv:1403.2774 v3 · 2014-03-11 · 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{EA54YCOGB7BUOYUANNMVVMXJZT}

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	2026-05-18T00:53:40.822890Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

203bcc09c60fc34762806b595ab2e9ccf2c4bc6c2b09104b9a44d1c345d33c48

Aliases

arxiv: 1403.2774 · arxiv_version: 1403.2774v3 · doi: 10.48550/arxiv.1403.2774 · pith_short_12: EA54YCOGB7BU · pith_short_16: EA54YCOGB7BUOYUA · pith_short_8: EA54YCOG

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/EA54YCOGB7BUOYUANNMVVMXJZT \
  | 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: 203bcc09c60fc34762806b595ab2e9ccf2c4bc6c2b09104b9a44d1c345d33c48

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "40e07c057b7bf26a5efc66d8515b12e0f17466cb5cffb89d5e3d1ed9482da3f1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2014-03-11T22:51:39Z",
    "title_canon_sha256": "70fd62f556336aa3629e78b437b6f7cd238cad63ca2b19c49a1a3525b9fabeb9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.2774",
    "kind": "arxiv",
    "version": 3
  }
}