Pith Number

pith:BL3ENAJC

pith:2015:BL3ENAJCINREJDKZJJZHX5VZXY

not attested not anchored not stored refs pending

The Method(!) of "Guess and Check"

Doron Zeilberger, Shalosh B. Ekhad

arxiv:1502.04377 v1 · 2015-02-15 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BL3ENAJCINREJDKZJJZHX5VZXY}

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	2026-05-18T02:26:59.884182Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0af64681224362448d594a727bf6b9be25af7d2745c107fdf65c39d4740cf46c

Aliases

arxiv: 1502.04377 · arxiv_version: 1502.04377v1 · doi: 10.48550/arxiv.1502.04377 · pith_short_12: BL3ENAJCINRE · pith_short_16: BL3ENAJCINREJDKZ · pith_short_8: BL3ENAJC

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/BL3ENAJCINREJDKZJJZHX5VZXY \
  | 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: 0af64681224362448d594a727bf6b9be25af7d2745c107fdf65c39d4740cf46c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d8abe705e09ba0b1f660c8f0dbadc8344cee7d163d188f26f33b71ea639dd05",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-02-15T22:45:59Z",
    "title_canon_sha256": "bddd885f838c45e5af8a0f6799572d83a85bc62a5c467dd2911e34355c8387f6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.04377",
    "kind": "arxiv",
    "version": 1
  }
}