Pith Number

pith:YSB3ZA3P

pith:2013:YSB3ZA3PRQAM55OEFSA72Y7DVV

not attested not anchored not stored refs pending

An inverse spectral problem for a star graph of Krein strings

Jonathan Eckhardt

arxiv:1305.2486 v2 · 2013-05-11 · 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{YSB3ZA3PRQAM55OEFSA72Y7DVV}

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	2026-05-18T01:13:10.066440Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c483bc836f8c00cef5c42c81fd63e3ad45cc1abfb7ceb86e959990bfe14206de

Aliases

arxiv: 1305.2486 · arxiv_version: 1305.2486v2 · doi: 10.48550/arxiv.1305.2486 · pith_short_12: YSB3ZA3PRQAM · pith_short_16: YSB3ZA3PRQAM55OE · pith_short_8: YSB3ZA3P

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/YSB3ZA3PRQAM55OEFSA72Y7DVV \
  | 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: c483bc836f8c00cef5c42c81fd63e3ad45cc1abfb7ceb86e959990bfe14206de

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b4fd35407215f165d2341dd8e41fe1436777d42c5e9f4598b15ddd330e2ccd9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SP",
    "submitted_at": "2013-05-11T09:44:06Z",
    "title_canon_sha256": "abfbe36400b6bd394b09cb3c52f83e83894e5b283bb1efce4346d206c6bc61d3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.2486",
    "kind": "arxiv",
    "version": 2
  }
}