Pith Number

pith:6ZHTK6RC

pith:2019:6ZHTK6RCDQ3H3DJWC5KG3IVRG4

not attested not anchored not stored refs pending

Finite-gap CMV matrices: Periodic coordinates and a Magic Formula

Benjamin Eichinger, Jacob S. Christiansen, Tom VandenBoom

arxiv:1902.05850 v2 · 2019-02-15 · math.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6ZHTK6RCDQ3H3DJWC5KG3IVRG4}

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	2026-05-17T23:51:46.608993Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f64f357a221c367d8d3617546da2b137316e90799307c72b9cacc19675d04b96

Aliases

arxiv: 1902.05850 · arxiv_version: 1902.05850v2 · doi: 10.48550/arxiv.1902.05850 · pith_short_12: 6ZHTK6RCDQ3H · pith_short_16: 6ZHTK6RCDQ3H3DJW · pith_short_8: 6ZHTK6RC

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/6ZHTK6RCDQ3H3DJWC5KG3IVRG4 \
  | 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: f64f357a221c367d8d3617546da2b137316e90799307c72b9cacc19675d04b96

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "342e547450cfd410372cacd2276b27f16e08fc186104fedd8a871a39a8de2ea7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SP",
    "submitted_at": "2019-02-15T15:37:02Z",
    "title_canon_sha256": "83b1d33e3fede88b0890a0133e99e94488def7e9f837f2f8d42452df630da501"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.05850",
    "kind": "arxiv",
    "version": 2
  }
}