Pith Number

pith:7HVGM3RO

pith:2017:7HVGM3ROLCBA2CA3MERJIVMAK2

not attested not anchored not stored refs pending

Towards a pseudoequational proof theory

Jorge Almeida, Ond\v{r}ej Kl\'ima

arxiv:1708.09681 v1 · 2017-08-31 · math.GR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7HVGM3ROLCBA2CA3MERJIVMAK2}

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	2026-05-17T23:51:14.834217Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9ea666e2e58820d081b6122945580569f7c0cbb08a30dcc7c7d1ab39d0e4071

Aliases

arxiv: 1708.09681 · arxiv_version: 1708.09681v1 · doi: 10.48550/arxiv.1708.09681 · pith_short_12: 7HVGM3ROLCBA · pith_short_16: 7HVGM3ROLCBA2CA3 · pith_short_8: 7HVGM3RO

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/7HVGM3ROLCBA2CA3MERJIVMAK2 \
  | 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: f9ea666e2e58820d081b6122945580569f7c0cbb08a30dcc7c7d1ab39d0e4071

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fca8e7dad3d29fb1c0a4b426ce337a3a757321c3a68ef24eba9785b13917f50d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2017-08-31T12:26:15Z",
    "title_canon_sha256": "0a9b2624ca2fc14480e3991a391e57236d37f70dc285b184bbc6a7e0fb19974b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.09681",
    "kind": "arxiv",
    "version": 1
  }
}