Pith Number

pith:M4UREFRW

pith:2026:M4UREFRWARI4KVW7GOIC66OIZ6

not attested not anchored not stored refs pending

A note on several inverse problems with generally random coefficients

C\u{a}t\u{a}lin I. C\^arstea

arxiv:2605.20004 v1 · 2026-05-19 · math.AP · math.PR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{M4UREFRWARI4KVW7GOIC66OIZ6}

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	2026-05-20T02:05:58.679930Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

67291216360451c556df33902f79c8cfbd93ad7572defc19557a792a70be5d74

Aliases

arxiv: 2605.20004 · arxiv_version: 2605.20004v1 · doi: 10.48550/arxiv.2605.20004 · pith_short_12: M4UREFRWARI4 · pith_short_16: M4UREFRWARI4KVW7 · pith_short_8: M4UREFRW

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/M4UREFRWARI4KVW7GOIC66OIZ6 \
  | 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: 67291216360451c556df33902f79c8cfbd93ad7572defc19557a792a70be5d74

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d170afea682047ad7ba108d3d2396f6a25f9b25bceb3d17d6c3c12ec8dea54a",
    "cross_cats_sorted": [
      "math.PR"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2026-05-19T15:35:55Z",
    "title_canon_sha256": "bba1ca96d9934193dc4be1cb9013707abf8c4e8f811873f927b57a79efe8715d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.20004",
    "kind": "arxiv",
    "version": 1
  }
}