Pith Number

pith:YDHZQWZC

pith:2017:YDHZQWZCU6L4L77MQXRS4XIW2Y

not attested not anchored not stored refs pending

Smoothness and long time existence for solutions of the porous medium equation on manifolds with conical singularities

Elmar Schrohe, Nikolaos Roidos

arxiv:1708.07542 v2 · 2017-08-24 · 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{YDHZQWZCU6L4L77MQXRS4XIW2Y}

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	2026-05-17T23:51:09.856472Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c0cf985b22a797c5ffec85e32e5d16d6129b970791705b17ae86726af3d894d8

Aliases

arxiv: 1708.07542 · arxiv_version: 1708.07542v2 · doi: 10.48550/arxiv.1708.07542 · pith_short_12: YDHZQWZCU6L4 · pith_short_16: YDHZQWZCU6L4L77M · pith_short_8: YDHZQWZC

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/YDHZQWZCU6L4L77MQXRS4XIW2Y \
  | 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: c0cf985b22a797c5ffec85e32e5d16d6129b970791705b17ae86726af3d894d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "76174d0a0ce54c47d6f740e7b45ba302acec8566ee980a2f963dab9c8ce4cac8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2017-08-24T20:20:54Z",
    "title_canon_sha256": "d45759ff35157c80d6bc43bd9820894eb7e535d8f16c5df87ac7632725c867f5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.07542",
    "kind": "arxiv",
    "version": 2
  }
}