Pith Number

pith:R624ZJ2N

pith:2021:R624ZJ2NSSCYD2XMGCXKYKYU4A

not attested not anchored not stored refs pending

Gaps in the Thue--Morse word

Lukas Spiegelhofer

arxiv:2102.01018 v2 · 2021-02-01 · math.CO · math.NT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{R624ZJ2NSSCYD2XMGCXKYKYU4A}

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.

Cited by

1 paper in Pith

Algorithm Adaptation Bias in Recommendation System Online Experiments

Receipt and verification

First computed	2026-07-05T03:33:04.024391Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8fb5cca74d948581eaec30aeac2b14e0280093c175489d5f860f3a0150a1588f

Aliases

arxiv: 2102.01018 · arxiv_version: 2102.01018v2 · doi: 10.48550/arxiv.2102.01018 · pith_short_12: R624ZJ2NSSCY · pith_short_16: R624ZJ2NSSCYD2XM · pith_short_8: R624ZJ2N

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/R624ZJ2NSSCYD2XMGCXKYKYU4A \
  | 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: 8fb5cca74d948581eaec30aeac2b14e0280093c175489d5f860f3a0150a1588f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "faeb2415acbd3f6ab12ddb5fe884c647cdedf9647c3dd4349183d35f0ef66b14",
    "cross_cats_sorted": [
      "math.NT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2021-02-01T17:48:45Z",
    "title_canon_sha256": "964aa7bd650f2ef7f040930b19fbe536a85441026ab43a15eb08301857541580"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.01018",
    "kind": "arxiv",
    "version": 2
  }
}