Pith Number

pith:EPRG7G7I

pith:2013:EPRG7G7I2GNWZSL3OX3FMTSV23

not attested not anchored not stored refs pending

Unsaturated subsurface flow with surface water and nonlinear in- and outflow conditions

Heiko Berninger, Kathrin Smetana, Mario Ohlberger, Oliver Sander

arxiv:1301.2488 v1 · 2013-01-11 · math.NA · math.AP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EPRG7G7I2GNWZSL3OX3FMTSV23}

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	2026-05-18T02:48:47.178143Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23e26f9be8d19b6cc97b75f6564e55d6d08e31d661630dc11ac1d35efcf58736

Aliases

arxiv: 1301.2488 · arxiv_version: 1301.2488v1 · doi: 10.48550/arxiv.1301.2488 · pith_short_12: EPRG7G7I2GNW · pith_short_16: EPRG7G7I2GNWZSL3 · pith_short_8: EPRG7G7I

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/EPRG7G7I2GNWZSL3OX3FMTSV23 \
  | 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: 23e26f9be8d19b6cc97b75f6564e55d6d08e31d661630dc11ac1d35efcf58736

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9074e8d7d9caefcaea3c1b4bc7841859b75b2595e3b6526108fa9b209d500ce8",
    "cross_cats_sorted": [
      "math.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-01-11T13:10:38Z",
    "title_canon_sha256": "0283083fa3f155d3c54dbbc0dac76056a826cc51e934adf6804506e04bda7581"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.2488",
    "kind": "arxiv",
    "version": 1
  }
}