Pith Number

pith:7GTCWLL2

pith:2017:7GTCWLL2RGIGFIF4SFNPPNS7GE

not attested not anchored not stored refs pending

Two strings at Hamming distance 1 cannot be both quasiperiodic

Amihood Amir, Costas S. Iliopoulos, Jakub Radoszewski

arxiv:1703.00195 v1 · 2017-03-01 · cs.FL · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7GTCWLL2RGIGFIF4SFNPPNS7GE}

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	2026-05-18T00:49:45.651331Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9a62b2d7a899062a0bc915af7b65f31074db61c84d8e65b9ff3027bba41f45c

Aliases

arxiv: 1703.00195 · arxiv_version: 1703.00195v1 · doi: 10.48550/arxiv.1703.00195 · pith_short_12: 7GTCWLL2RGIG · pith_short_16: 7GTCWLL2RGIGFIF4 · pith_short_8: 7GTCWLL2

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/7GTCWLL2RGIGFIF4SFNPPNS7GE \
  | 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: f9a62b2d7a899062a0bc915af7b65f31074db61c84d8e65b9ff3027bba41f45c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "82b8b6cee669ec783321b07373545d1ce39dec0bca34532ed7f640f0fcf8cc19",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2017-03-01T09:38:07Z",
    "title_canon_sha256": "95a3ca4b030f509088b4d889d84076f8ee3407cefcafa8690d310a31c371988f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.00195",
    "kind": "arxiv",
    "version": 1
  }
}