Pith Number

pith:4JBH4L5G

pith:2021:4JBH4L5GTJTSVASRNAWAF6J3R3

not attested not anchored not stored refs pending

Weak Essentially Undecidable Theories of Concatenation II

Juvenal Murwanashyaka

arxiv:2112.13907 v1 · 2021-12-27 · math.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4JBH4L5GTJTSVASRNAWAF6J3R3}

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	2026-07-05T03:44:00.216483Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e2427e2fa69a672a8251682c02f93b8eeb4c93e6dda0a07b7974ff70711c60fc

Aliases

arxiv: 2112.13907 · arxiv_version: 2112.13907v1 · doi: 10.48550/arxiv.2112.13907 · pith_short_12: 4JBH4L5GTJTS · pith_short_16: 4JBH4L5GTJTSVASR · pith_short_8: 4JBH4L5G

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/4JBH4L5GTJTSVASRNAWAF6J3R3 \
  | 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: e2427e2fa69a672a8251682c02f93b8eeb4c93e6dda0a07b7974ff70711c60fc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6784e130b45150f9d8fb25787da964fb34d9eb52e6c5da2b2cfe60fd918ceda1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2021-12-27T21:21:11Z",
    "title_canon_sha256": "af00cf183c5090e9b70b52be718c157f0cab32e84c53f61156104fc2ab0fd45a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.13907",
    "kind": "arxiv",
    "version": 1
  }
}