Pith Number

pith:FTOJDIZX

pith:2024:FTOJDIZX2PAS5Z6OLSWLVFWZXB

not attested not anchored not stored refs pending

A new numerical method for scalar eigenvalue problems in heterogeneous, dispersive, sign-changing materials

Florian Oberender, Martin Halla, Thorsten Hohage

arxiv:2401.16368 v1 · 2024-01-29 · math.NA · cs.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{FTOJDIZX2PAS5Z6OLSWLVFWZXB}

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	2026-07-05T07:38:48.130415Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2cdc91a337d3c12ee7ce5cacba96d9b846bbf832f31113e47103b59cee440e32

Aliases

arxiv: 2401.16368 · arxiv_version: 2401.16368v1 · doi: 10.48550/arxiv.2401.16368 · pith_short_12: FTOJDIZX2PAS · pith_short_16: FTOJDIZX2PAS5Z6O · pith_short_8: FTOJDIZX

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/FTOJDIZX2PAS5Z6OLSWLVFWZXB \
  | 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: 2cdc91a337d3c12ee7ce5cacba96d9b846bbf832f31113e47103b59cee440e32

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2328ba460a45610896864e117304e056ce16db4bb102c973654f1705468fe606",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2024-01-29T18:08:36Z",
    "title_canon_sha256": "c42e95e391d9e90792682d26d1591bfbe5da2d5a1f6b8d524f4f595425036155"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2401.16368",
    "kind": "arxiv",
    "version": 1
  }
}