Pith Number

pith:EEZCCOOB

pith:2018:EEZCCOOBNEI5HM32AFUAJIIZRI

not attested not anchored not stored refs pending

Counting Homomorphisms to Trees Modulo a Prime

Andreas G\"obel, J. A. Gregor Lagodzinski, Karen Seidel

arxiv:1802.06103 v2 · 2018-02-16 · cs.CC · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EEZCCOOBNEI5HM32AFUAJIIZRI}

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	2026-05-18T00:17:53.402893Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

21322139c16911d3b37a016804a1198a027dd469ab29a039e83d9394efe01c36

Aliases

arxiv: 1802.06103 · arxiv_version: 1802.06103v2 · doi: 10.48550/arxiv.1802.06103 · pith_short_12: EEZCCOOBNEI5 · pith_short_16: EEZCCOOBNEI5HM32 · pith_short_8: EEZCCOOB

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/EEZCCOOBNEI5HM32AFUAJIIZRI \
  | 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: 21322139c16911d3b37a016804a1198a027dd469ab29a039e83d9394efe01c36

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "027c829fc0b42acce3e28761e6dfb22492cfbd50f5a73eebbe2b49e0d6e27a3c",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2018-02-16T20:08:42Z",
    "title_canon_sha256": "eb3d54b77860c936cdebcd0f1c1b2e68f22a92dc496e39db0e1981d50654190c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.06103",
    "kind": "arxiv",
    "version": 2
  }
}