Pith Number

pith:ECVV5U53

pith:2014:ECVV5U53E3QPUBZKAASQS53VGV

not attested not anchored not stored refs pending

A new approach to spectral approximation

Michael Strauss

arxiv:1403.7120 v1 · 2014-03-27 · 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{ECVV5U53E3QPUBZKAASQS53VGV}

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	2026-05-18T02:55:26.459018Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20ab5ed3bb26e0fa072a0025097775354bef5ebbba5607ea779080b12ef2a9ff

Aliases

arxiv: 1403.7120 · arxiv_version: 1403.7120v1 · doi: 10.48550/arxiv.1403.7120 · pith_short_12: ECVV5U53E3QP · pith_short_16: ECVV5U53E3QPUBZK · pith_short_8: ECVV5U53

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/ECVV5U53E3QPUBZKAASQS53VGV \
  | 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: 20ab5ed3bb26e0fa072a0025097775354bef5ebbba5607ea779080b12ef2a9ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3dd2710b103193d5e070a57a365220092685605a7ceba4f25253fd61289db7b0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SP",
    "submitted_at": "2014-03-27T16:30:47Z",
    "title_canon_sha256": "1e4574e44803b23ecf3ddbc44755588a785acb96476bafba1fdf7ad5245815d9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.7120",
    "kind": "arxiv",
    "version": 1
  }
}