Pith Number

pith:24UQMPQ3

pith:2008:24UQMPQ3EAUKDXXGYCUWCEFK7L

not attested not anchored not stored refs pending

Tortuosity-porosity relation in the porous media flow

Arzhang Khalili, Maciej Matyka, Zbigniew Koza

arxiv:0801.3316 v1 · 2008-01-22 · physics.flu-dyn · physics.comp-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{24UQMPQ3EAUKDXXGYCUWCEFK7L}

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	2026-05-18T03:16:17.929935Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d729063e1b2028a1dee6c0a96110aafaf2d02eb20519c94cd568275cc5a5d6d6

Aliases

arxiv: 0801.3316 · arxiv_version: 0801.3316v1 · doi: 10.48550/arxiv.0801.3316 · pith_short_12: 24UQMPQ3EAUK · pith_short_16: 24UQMPQ3EAUKDXXG · pith_short_8: 24UQMPQ3

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/24UQMPQ3EAUKDXXGYCUWCEFK7L \
  | 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: d729063e1b2028a1dee6c0a96110aafaf2d02eb20519c94cd568275cc5a5d6d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5cf0b4ee17a65998a4f9658238400d37586cf598e57bebde6c210d133df5cbfe",
    "cross_cats_sorted": [
      "physics.comp-ph"
    ],
    "license": "",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2008-01-22T12:21:45Z",
    "title_canon_sha256": "80754193ad98fa844625bbd13bdcfd7e4112166f52353be3d3d13f2444439218"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0801.3316",
    "kind": "arxiv",
    "version": 1
  }
}