Pith Number

pith:XZBCR5JU

pith:2016:XZBCR5JU3VVX6ZCL6V4CZ3BYCN

not attested not anchored not stored refs pending

How to avoid mass matrix for linear hyperbolic problems

Paola Bacigaluppi, Remi Abgrall, Svetlana Tokareva

arxiv:1603.02631 v1 · 2016-03-08 · 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{XZBCR5JU3VVX6ZCL6V4CZ3BYCN}

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	2026-06-04T17:10:05.210160Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be4228f534dd6b7f644bf5782cec38135de0121c74b67c6b39f1e23c095e6af2

Aliases

arxiv: 1603.02631 · arxiv_version: 1603.02631v1 · doi: 10.48550/arxiv.1603.02631 · pith_short_12: XZBCR5JU3VVX · pith_short_16: XZBCR5JU3VVX6ZCL · pith_short_8: XZBCR5JU

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/XZBCR5JU3VVX6ZCL6V4CZ3BYCN \
  | 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: be4228f534dd6b7f644bf5782cec38135de0121c74b67c6b39f1e23c095e6af2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0532e4d04f32b857f9d53d93ace41b8dc80fad3e418f2e75bcbf246af6347b2f",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2016-03-08T19:32:01Z",
    "title_canon_sha256": "04424ffa9cfa6bc3a612e11397d36b91a687fe590208dbe15bdd2b12a34197e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.02631",
    "kind": "arxiv",
    "version": 1
  }
}