Pith Number

pith:Y76R3Y57

pith:2018:Y76R3Y57Z4L4TORXXUQIJJC7C5

not attested not anchored not stored refs pending

Singularly perturbed reaction-diffusion problems with discontinuities in the initial and/or the boundary data

Eugene O'Riordan, Jose Luis Gracia

arxiv:1811.04016 v2 · 2018-11-09 · 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{Y76R3Y57Z4L4TORXXUQIJJC7C5}

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	2026-05-17T23:53:41.596458Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c7fd1de3bfcf17c9ba37bd2084a45f176f38d58bac6a35462ab9d0a71fccfc01

Aliases

arxiv: 1811.04016 · arxiv_version: 1811.04016v2 · doi: 10.48550/arxiv.1811.04016 · pith_short_12: Y76R3Y57Z4L4 · pith_short_16: Y76R3Y57Z4L4TORX · pith_short_8: Y76R3Y57

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/Y76R3Y57Z4L4TORXXUQIJJC7C5 \
  | 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: c7fd1de3bfcf17c9ba37bd2084a45f176f38d58bac6a35462ab9d0a71fccfc01

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "463f59ec6864c891c8942599330129c31c23597a27fa8974f1878152ffcd9725",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-11-09T17:10:41Z",
    "title_canon_sha256": "5d06b6f80bdd19286b0fa833632a009d2b95fffcdec0f1fa9d4eef59fe9b4456"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.04016",
    "kind": "arxiv",
    "version": 2
  }
}