Pith Number

pith:F7OPQXUM

pith:2016:F7OPQXUMCT5LDHUEK4LJNMAXXR

not attested not anchored not stored refs pending

A stable version of Terao conjecture

Cristian Anghel

arxiv:1609.04528 v1 · 2016-09-15 · math.AG · math.AC · 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{F7OPQXUMCT5LDHUEK4LJNMAXXR}

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	2026-05-18T01:04:36.452816Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2fdcf85e8c14fab19e84571696b017bc76fd8042e99d21a1e8f0cf82e4b749d4

Aliases

arxiv: 1609.04528 · arxiv_version: 1609.04528v1 · doi: 10.48550/arxiv.1609.04528 · pith_short_12: F7OPQXUMCT5L · pith_short_16: F7OPQXUMCT5LDHUE · pith_short_8: F7OPQXUM

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/F7OPQXUMCT5LDHUEK4LJNMAXXR \
  | 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: 2fdcf85e8c14fab19e84571696b017bc76fd8042e99d21a1e8f0cf82e4b749d4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e554b82234567142aefd44c2cbca6f574dbde621e28b84516b3c05d712689fe5",
    "cross_cats_sorted": [
      "math.AC",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2016-09-15T07:43:08Z",
    "title_canon_sha256": "16487ba5c265eca71704b845f0bc7771642178f1241c59780539826d52e9fbf0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.04528",
    "kind": "arxiv",
    "version": 1
  }
}