Pith Number

pith:WNKHHFTV

pith:2014:WNKHHFTV2SARVS6DMZG7WY3Q3W

not attested not anchored not stored refs pending

EF+EX Forest Algebras

Andreas Krebs, Howard Straubing

arxiv:1408.0809 v1 · 2014-08-04 · cs.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{WNKHHFTV2SARVS6DMZG7WY3Q3W}

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	2026-05-18T02:45:50.360246Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b354739675d4811acbc3664dfb6370dd84ec65418cdf24123c3dc0b9fb4be613

Aliases

arxiv: 1408.0809 · arxiv_version: 1408.0809v1 · doi: 10.48550/arxiv.1408.0809 · pith_short_12: WNKHHFTV2SAR · pith_short_16: WNKHHFTV2SARVS6D · pith_short_8: WNKHHFTV

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/WNKHHFTV2SARVS6DMZG7WY3Q3W \
  | 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: b354739675d4811acbc3664dfb6370dd84ec65418cdf24123c3dc0b9fb4be613

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3294fbc6b3527b4e56a1f671013325e3447849ca82d7d1716a152e2dee9514ab",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2014-08-04T20:29:08Z",
    "title_canon_sha256": "6e4cdd1e774f0c2c8609d5d5bba5f946b3023ca5e185067c133237bb0ebecb0c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.0809",
    "kind": "arxiv",
    "version": 1
  }
}