Pith Number

pith:6M5CXA2S

pith:2018:6M5CXA2SZXFY3MEJ43FPLEWRRI

not attested not anchored not stored refs pending

Numerical simulation of transport in porous media: some problems from micro to macro scale

Andreas Springer (1), Boris Vexler (1) ((1) Technische Universit\"at M\"unchen, Ernst Rank (1), Germany), Michael Manhart (1), Munich, Quanji Cai (1), Ralf-Peter Mundani (1), Sheema Kooshapur (1)

arxiv:1807.00688 v1 · 2018-07-02 · math.NA · physics.comp-ph · physics.flu-dyn

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6M5CXA2SZXFY3MEJ43FPLEWRRI}

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	2026-05-18T00:11:51.781797Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f33a2b8352cdcb8db089e6caf592d18a21bc23bc50752131763a97c6c1c00c63

Aliases

arxiv: 1807.00688 · arxiv_version: 1807.00688v1 · doi: 10.48550/arxiv.1807.00688 · pith_short_12: 6M5CXA2SZXFY · pith_short_16: 6M5CXA2SZXFY3MEJ · pith_short_8: 6M5CXA2S

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/6M5CXA2SZXFY3MEJ43FPLEWRRI \
  | 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: f33a2b8352cdcb8db089e6caf592d18a21bc23bc50752131763a97c6c1c00c63

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea20a2812fca2cff06a2451f1402ab1b765858185c936dad8e3cabed4cdcb620",
    "cross_cats_sorted": [
      "physics.comp-ph",
      "physics.flu-dyn"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-07-02T14:15:04Z",
    "title_canon_sha256": "3146ab0ebd14bb441adf4fb89dc6b29a30e75219d0aad899368ca5b57d4113d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.00688",
    "kind": "arxiv",
    "version": 1
  }
}