Pith Number

pith:EOFQDTA5

pith:2015:EOFQDTA5EMP7UGFA3E7FPF7MVE

not attested not anchored not stored refs pending

Branching within branching I: The extinction problem

Gerold Alsmeyer, S\"oren Gr\"ottrup

arxiv:1505.03979 v1 · 2015-05-15 · math.PR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EOFQDTA5EMP7UGFA3E7FPF7MVE}

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	2026-05-18T02:09:40.538896Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

238b01cc1d231ffa18a0d93e5797eca9046487f12a664f6ab878c9719c90d527

Aliases

arxiv: 1505.03979 · arxiv_version: 1505.03979v1 · doi: 10.48550/arxiv.1505.03979 · pith_short_12: EOFQDTA5EMP7 · pith_short_16: EOFQDTA5EMP7UGFA · pith_short_8: EOFQDTA5

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/EOFQDTA5EMP7UGFA3E7FPF7MVE \
  | 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: 238b01cc1d231ffa18a0d93e5797eca9046487f12a664f6ab878c9719c90d527

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c92679918e775a72d59b3b9d5b37c9482dc10d5b7d0e47fd10a1f3602bf8a76b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.PR",
    "submitted_at": "2015-05-15T07:49:08Z",
    "title_canon_sha256": "3a92e9ff25b0dde18e50d95e85fd2462c7c2e925b34644f222878054c093bdd0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.03979",
    "kind": "arxiv",
    "version": 1
  }
}