Pith Number

pith:EPSDB6PC

pith:2019:EPSDB6PCPUIDDRWEMDH5NB3PD7

not attested not anchored not stored refs pending

Galerkin-collocation approximation in time for the wave equation and its post-processing

Gunar Matthies, Markus Bause, Mathias Anselmann, Simon Becher

arxiv:1908.08238 v1 · 2019-08-22 · 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{EPSDB6PCPUIDDRWEMDH5NB3PD7}

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	2026-07-04T23:59:10.914390Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23e430f9e27d1031c6c460cfd6876f1feab9f4830fa01f1d6da5091aa5feef41

Aliases

arxiv: 1908.08238 · arxiv_version: 1908.08238v1 · doi: 10.48550/arxiv.1908.08238 · pith_short_12: EPSDB6PCPUID · pith_short_16: EPSDB6PCPUIDDRWE · pith_short_8: EPSDB6PC

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/EPSDB6PCPUIDDRWEMDH5NB3PD7 \
  | 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: 23e430f9e27d1031c6c460cfd6876f1feab9f4830fa01f1d6da5091aa5feef41

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "35ea166de54af3d7ddd086963cc3d0147a981d86fcd5dfed6ac72e6c746754c0",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-08-22T07:44:46Z",
    "title_canon_sha256": "9a2f7e79f009ab8973fe638460b669c030fb8a707a2c5e42930d9fb9d24f0292"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.08238",
    "kind": "arxiv",
    "version": 1
  }
}