Pith Number

pith:PA7HCWMA

pith:2018:PA7HCWMAU72TZYRL7PPWLADZYY

not attested not anchored not stored refs pending

Inverse of Infinite Hankel Moment Matrices

Christian Berg, Ryszard Szwarc

arxiv:1801.06013 v2 · 2018-01-18 · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PA7HCWMAU72TZYRL7PPWLADZYY}

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	2026-05-18T00:03:56.528640Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

783e715980a7f53ce22bfbdf658079c62ec18a2ef02d71d77cba83177bcbb4b8

Aliases

arxiv: 1801.06013 · arxiv_version: 1801.06013v2 · doi: 10.48550/arxiv.1801.06013 · pith_short_12: PA7HCWMAU72T · pith_short_16: PA7HCWMAU72TZYRL · pith_short_8: PA7HCWMA

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/PA7HCWMAU72TZYRL7PPWLADZYY \
  | 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: 783e715980a7f53ce22bfbdf658079c62ec18a2ef02d71d77cba83177bcbb4b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ba2fc0d761dd00464bf32c24fa9fcc4bcde0b7879b5bd7cf44b0205458c46129",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2018-01-18T13:49:02Z",
    "title_canon_sha256": "0b8581a6abafa3ccf7919c6c85f3dff5a3ba09976f670acce40831f976cee3cf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.06013",
    "kind": "arxiv",
    "version": 2
  }
}