Pith Number

pith:HCTGTZGG

pith:2021:HCTGTZGGXM4EY2RTINWJLAHBNN

not attested not anchored not stored refs pending

Model-Order Reduction For Hyperbolic Relaxation Systems

Michael Herty, Sara Grundel

arxiv:2104.14823 v1 · 2021-04-30 · 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{HCTGTZGGXM4EY2RTINWJLAHBNN}

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	2026-07-05T02:36:26.912205Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

38a669e4c6bb384c6a33436c9580e16b420fb56716d9de8f5e4f2164faa1fb7e

Aliases

arxiv: 2104.14823 · arxiv_version: 2104.14823v1 · doi: 10.48550/arxiv.2104.14823 · pith_short_12: HCTGTZGGXM4E · pith_short_16: HCTGTZGGXM4EY2RT · pith_short_8: HCTGTZGG

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/HCTGTZGGXM4EY2RTINWJLAHBNN \
  | 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: 38a669e4c6bb384c6a33436c9580e16b420fb56716d9de8f5e4f2164faa1fb7e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e3b648273269ce261652eb2cdf65647b711cc6f336a69f85ac68dad02217bd5a",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2021-04-30T08:15:11Z",
    "title_canon_sha256": "abb323778ee8753f1626f98a9fd5671af1383d19cd93c09978d7250e5dd476b8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.14823",
    "kind": "arxiv",
    "version": 1
  }
}