Pith Number

pith:FWCI6Y6G

pith:2015:FWCI6Y6GNP3WO5LXY34JRQZ2L4

not attested not anchored not stored refs pending

A sign preserving WENO reconstruction method

Deep Ray, Ulrik S. Fjordholm

arxiv:1510.09038 v1 · 2015-10-30 · 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{FWCI6Y6GNP3WO5LXY34JRQZ2L4}

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	2026-05-18T00:09:10.479312Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d848f63c66bf7677577c6f898c33a5f3a3c385508a3731498a73bbe794018f8

Aliases

arxiv: 1510.09038 · arxiv_version: 1510.09038v1 · doi: 10.48550/arxiv.1510.09038 · pith_short_12: FWCI6Y6GNP3W · pith_short_16: FWCI6Y6GNP3WO5LX · pith_short_8: FWCI6Y6G

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/FWCI6Y6GNP3WO5LXY34JRQZ2L4 \
  | 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: 2d848f63c66bf7677577c6f898c33a5f3a3c385508a3731498a73bbe794018f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c84abc2ee3fdf2c9c5667f62ba118da317cca998dc63326433c139a252c5a317",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-10-30T10:21:10Z",
    "title_canon_sha256": "7387761a095860e2084da3df96ed80bdfe28897b3e9eb09003a5cdbd64430b60"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.09038",
    "kind": "arxiv",
    "version": 1
  }
}