Pith Number

pith:KQOE4QNI

pith:2018:KQOE4QNI2DPOLKL536JK573R7B

not attested not anchored not stored refs pending

Tiling the plane with equilateral triangles

Gabor Tardos, Janos Pach

arxiv:1805.08840 v1 · 2018-05-22 · 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{KQOE4QNI2DPOLKL536JK573R7B}

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	2026-05-18T00:15:09.296790Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

541c4e41a8d0dee5a97ddf92aeff71f869bd461e297b918dcd876e439319649d

Aliases

arxiv: 1805.08840 · arxiv_version: 1805.08840v1 · doi: 10.48550/arxiv.1805.08840 · pith_short_12: KQOE4QNI2DPO · pith_short_16: KQOE4QNI2DPOLKL5 · pith_short_8: KQOE4QNI

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/KQOE4QNI2DPOLKL536JK573R7B \
  | 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: 541c4e41a8d0dee5a97ddf92aeff71f869bd461e297b918dcd876e439319649d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b3a8c94cbf859a99be451b589df7118cdd0f7121094fa3028102dbcf85865ab7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-05-22T20:03:23Z",
    "title_canon_sha256": "4f7221c7c7f7925c2757a8c9fe0f2b058b1cc57b0f863e0ff3918c5050acb075"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.08840",
    "kind": "arxiv",
    "version": 1
  }
}