Pith Number

pith:AGH2HJ55

pith:2013:AGH2HJ55ZDEAZBQ56TPLW64UU4

not attested not anchored not stored refs pending

There is no finite variable axiomatization for various diagonal free algebras

Tarek Sayed Ahmed

arxiv:1305.7186 v1 · 2013-05-29 · 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{AGH2HJ55ZDEAZBQ56TPLW64UU4}

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	2026-05-18T03:22:08.457097Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

018fa3a7bdc8c80c861df4debb7b94a73202efff925bcc2c8bacd8f5a52c27e5

Aliases

arxiv: 1305.7186 · arxiv_version: 1305.7186v1 · doi: 10.48550/arxiv.1305.7186 · pith_short_12: AGH2HJ55ZDEA · pith_short_16: AGH2HJ55ZDEAZBQ5 · pith_short_8: AGH2HJ55

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/AGH2HJ55ZDEAZBQ56TPLW64UU4 \
  | 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: 018fa3a7bdc8c80c861df4debb7b94a73202efff925bcc2c8bacd8f5a52c27e5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e3f8da340cc64baea658626278bfc3732ab3bb361de343c704e6a899706eb3ff",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2013-05-29T17:27:40Z",
    "title_canon_sha256": "3e90893637d53c9b8fd292745108cb4919dce668a932bd40f35475c6155a4b69"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.7186",
    "kind": "arxiv",
    "version": 1
  }
}