Pith Number

pith:FRKTAUZL

pith:2015:FRKTAUZL2YQVPOJD7J5JTKJJER

not attested not anchored not stored refs pending

The waveguide eigenvalue problem and the tensor infinite Arnoldi method

Elias Jarlebring, Giampaolo Mele, Olof Runborg

arxiv:1503.02096 v2 · 2015-03-06 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FRKTAUZL2YQVPOJD7J5JTKJJER}

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	2026-05-18T02:20:49.209899Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c5530532bd62157b923fa7a99a929246c54d50740d327af1ae0eadeb8b0b470

Aliases

arxiv: 1503.02096 · arxiv_version: 1503.02096v2 · doi: 10.48550/arxiv.1503.02096 · pith_short_12: FRKTAUZL2YQV · pith_short_16: FRKTAUZL2YQVPOJD · pith_short_8: FRKTAUZL

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/FRKTAUZL2YQVPOJD7J5JTKJJER \
  | 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: 2c5530532bd62157b923fa7a99a929246c54d50740d327af1ae0eadeb8b0b470

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7e7c2599e43a0b873b3655b41e422c0e288f2d7859330941feb333754092d1d3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-03-06T21:43:34Z",
    "title_canon_sha256": "6a40ce7d6b8ae814139a319e6eb176efb840584064624b5c4daed67d0a97066a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.02096",
    "kind": "arxiv",
    "version": 2
  }
}